Image credits

Every image on the site is a real photograph under an open licence. CC BY and CC BY-SA both require naming the photographer and the licence itself.

Where the images come from

• Wikimedia Commons · a free repository, CC licences and public domain
• NASA Image Library · public domain
• The Met Open Access · CC0
• Open-access papers under CC BY, where the figure itself carries that licence

The images (1032)

• A corroded fragment of the Antikythera mechanism with gear teeth exposed
  Logg Tandy · CC BY 4.0 · Source
• Leafcutter ants moving across a sandy surface
  Insects Unlocked · CC0 · Source
• Framed paintings on red gallery walls
  Oscar Taylor · CC BY-SA 2.0 · Source
• A close view of hands at a piano keyboard
  Bretwa · CC BY-SA 4.0 · Source
• A fragment of papyrus with Greek letters above the text lines
  inharecherche · CC BY 2.0 · Source
• A white marble head of a Greek philosopher, a Roman copy, in a museum
  Osama Shukir Muhammed Amin FRCP(Glasg) · CC BY-SA 4.0 · Source
• A ballet dancer holding an extended pose against a white background
  Stano Novak · CC BY 2.5 · Source
• Two pages of Beethoven’s handwritten manuscript, notes in ink
  Ludwig van Beethoven · Public domain · Source
• An empty concert hall seen from the stage
  Radek Grzybowski rgrzybowski · CC0 · Source
• An older couple looking at paintings in a gallery
  Sandra Soster · CC BY-SA 4.0 · Source
• A line of sheet music with a rising and falling melodic phrase
  Phra Chenduriyang · Public domain · Source
• A conservator examining the surface of an oil painting under raking light
  Sailko · CC BY 3.0 · Source
• A terracotta army warrior in grey clay, with no visible paint left
  Gary Lee Todd, Ph.D. · CC0 · Source
• A hand outline sprayed in red paint on a rock wall
  Schomynv · Public domain · Source
• A page from an illuminated book of hours with intense blue, gold and painted flowers
  Unknown Flemish Miniaturist · Public domain · Source
• A tall masonry arch seen from below against the sky
  Ingo Mehling · CC BY-SA 4.0 · Source
• Visitors photographing the Mona Lisa at the Louvre
  Pedemann · CC BY-SA 4.0 · Source
• A woman in headphones waiting on a railway platform, photographed from behind
  Sascha Kohlmann · CC BY-SA 2.0 · Source
• A hand playing on piano keys in close-up
  Gabriel Barletta gabebarletta · CC0 · Source
• A dense web of poured and spattered paint across a large canvas
  Ricardo Viana ricardoviana · CC0 · Source
• A turntable arm resting on a vinyl record
  M. Johnson · CC BY 2.0 · Source
• The 1910 version of The Scream by Edvard Munch
  Edvard Munch · Public domain · Source
• A Sulawesi cave painting: a red animal figure and hand outlines
  Siti Hardianti Rais · CC BY-SA 4.0 · Source
• A rock arch and sandstone cliffs in the Timna Valley
  Chmee2 · CC BY 3.0 · Source
• Van Gogh’s Sunflowers, with some of the flower heads tending to brown
  Vincent van Gogh · Public domain · Source
• A luthier carving the top plate of a new violin in a workshop
  Kritzolina · CC BY-SA 4.0 · Source
• A green aurora over a snow-covered landscape
  Pavel.shyshkouski · CC BY-SA 4.0 · Source
• A pink axolotl with branching external gills
  Amandasofiarana · CC BY-SA 4.0 · Source
• A researcher in a laboratory holding an agar plate up to the light, dark bacterial colonies across it
  David McClenaghan, CSIRO · CC BY 3.0 · Source
• A banana skin lying on a smooth floor
  Tiia Monto · CC BY-SA 4.0 · Source
• A black and white portrait of an older man with a long white beard and unkempt hair
  subhamshome28 · CC0 · Source
• A hive frame covered with hundreds of honeybees, resting on green grass
  Killerlimpet · Public domain · Source
• A chart showing the declining frequency of each leading digit
  Sam Derbyshire at en.wikipedia · CC BY-SA 3.0 · Source
• Two grey cranes flying low over a golden field
  Dori · CC BY-SA 3.0 · Source
• A blurred orange ring around a dark region, the image of the black hole at the centre of M87
  Event Horizon Telescope · CC BY 4.0 · Source
• A computed reconstruction of white matter fibre bundles in the human brain, in different colours
  Thomas Schultz · CC BY-SA 3.0 · Source
• A cat poured into a round container, filling it exactly
  Sonkiki · CC0 · Source
• A panther chameleon in vivid colors on a branch
  Charles J. Sharp · CC BY-SA 4.0 · Source
• An antique marine chronometer in an open wooden box, with a white dial and brass rings
  Charles Frodsham · CC BY-SA 4.0 · Source
• A dark cicada with orange wings on a cluster of white flowers
  Jbjensen1 · CC BY 4.0 · Source
• A basketball player standing at the free-throw line facing the hoop with players waiting on both sides
  Marylandstater at English Wikipedia · Public domain · Source
• Colorful euro notes with coins of different values resting on them
  Avij (talk · contribs) · Public domain · Source
• A pink piggy bank against a white background
  Fabian Blank blankerwahnsinn · CC0 · Source
• The steps and columned front of the New York stock exchange between skyscrapers
  Arild Vågen · CC BY-SA 4.0 · Source
• An African elephant raising its trunk high with its ears spread wide
  Muhammad Mahdi Karim Facebook The making of this document was supported by Wikimedia CH. (Submit your project!) For all the files concerned, please see the category Supported by Wikimedia CH. العربية ∙ বাংলা ∙ čeština ∙ Deutsch ∙ English ∙ Esperanto ∙ español ∙ français ∙ galego ∙ हिन्दी ∙ magyar ∙ italiano ∙ 日本語 ∙ македонски ∙ Nederlands ∙ português do Brasil ∙ rumantsch ∙ русский ∙ sicilianu ∙ slovenščina ∙ தமிழ் ∙ українська ∙ 中文 ∙ +/− · GFDL 1.2 · Source
• A hand holding a small open book with dense lines of Ottoman script
  Vouliagmeni · CC BY-SA 4.0 · Source
• The historic stock exchange building in Saint Petersburg under a blue sky
  Matthias Süßen · CC BY-SA 4.0 · Source
• The silhouette of a small aircraft passing beside an orange sun in a sunset sky
  Subhrajyoti07 · CC BY-SA 4.0 · Source
• The skyline of Quebec City with snow-covered houses in white fog
  Wilfredor · CC0 · Source
• A row of athletes in racing chairs and runners starting together in a city marathon
  Marie-Lan Nguyen · CC BY 3.0 · Source
• A reader holding an open book above a notebook and pen beside a wooden table
  Thought Catalog thoughtcatalog · CC0 · Source
• Stacks of copper and silver coins at different heights against a white background
  Dori · Public domain · Source
• A penalty taker sending the ball toward the goal as a goalkeeper waits on the line
  Jay · CC BY 2.0 · Source
• A metal pendant resting on the pages of an open book in soft window light
  freestocks.org freestocks · CC0 · Source
• A close-up of a runner’s feet in sports shoes touching an asphalt road
  Petar Milošević · CC BY-SA 4.0 · Source
• A pale ghost crab standing on damp sand, raising its black eyes
  This Photo was taken by Timothy A. Gonsalves. Feel free to use my photos, but please mention me as the author. I would much appreciate if you send me an email tagooty@yahoo.com or write on my talk page, for my information. Please contact me before commercial use. Please do not upload an edited image here without consulting me. I would like to make corrections only at my own source to ensure that the changes improve the image and are preserved.Otherwise you may upload an edited image with a new name. Please use one of the templates derivative or extract. · CC BY-SA 4.0 · Source
• A black and white great tit perched on a thin branch against a blurred green background
  Apu Jaman · CC BY-SA 4.0 · Source
• A hand pointing at a line in an open book while another person looks at the page
  SMU Central University Libraries · No restrictions · Source
• A whale skeleton on a dark seabed surrounded by fish and small creatures in a submersible’s light
  National Marine Sanctuaries · CC BY 2.0 · Source
• A close-up of a zebra head and neck showing the black and white stripe pattern
  Chris Eason from London · CC BY 2.0 · Source
• A wide outdoor bed with cushions standing on grass between trees
  Msigger · CC BY-SA 4.0 · Source
• A wide lake ringed by green hills and mountains under a clear sky
  Mary Haviour · CC BY-SA 2.0 · Source
• A gray feeder hanging in a garden, filled with seed for birds
  Llewee · CC BY-SA 4.0 · Source
• A thin flock of birds flying in a long line against a blue sky
  Raj.palgun13 · CC BY-SA 4.0 · Source
• A packed stadium stand with thousands of football supporters standing shoulder to shoulder
  Unknown authorUnknown author · Public domain · Source
• Footballers in red shirts warming up together on the grass
  Samson Ssemakadde · CC0 · Source
• Two women sitting on exercise mats rolling foam rollers under their legs
  Roger Mommaerts · CC BY-SA 2.0 · Source
• A night satellite map of the world showing concentrations of light along cities and coastlines
  Data: Marc Imhoff/NASA GSFC, Christopher Elvidge/NOAA NGDC; Image: Craig Mayhew and Robert Simmon/NASA GSFC · Public domain · Source
• A rocky walking trail through autumn forest on a mountain slope
  Pudelek · CC BY-SA 4.0 · Source
• A broad path through an urban park between trees in autumn colors
  Krzysztof Popławski · CC BY-SA 4.0 · Source
• A Cezanne landscape showing a mountain, trees and houses in a valley
  Paul Cézanne · Public domain · Source
• The poet Elizabeth Bishop seated at a writing desk covered with papers
  Library of Congress Office of Communications · Public domain · Source
• A Paralympic athlete lifting a barbell in a training hall
  The National Paralympic Committee of Azerbaijan · CC BY-SA 4.0 · Source
• A black e-reader displaying a page of text against a white background
  117PXL · CC BY-SA 4.0 · Source
• A painting of a woman seated beside a table reading an open book
  Jean-Baptiste Camille Corot · Public domain · Source
• A street in Los Angeles lined with tall trees and buildings under a blue sky
  Dietmar Rabich · CC BY-SA 4.0 · Source
• Large headphones resting on a laptop keyboard in front of a screen
  Álvaro Bernal abn · CC0 · Source
• Two young people sitting opposite each other in an animated conversation with their hands
  Ananian · CC BY-SA 3.0 · Source
• An urban park in Helsinki with a path, lawn, trees and apartment buildings behind
  Pekka Vyhtinen · CC BY 4.0 · Source
• A close-up of the lenses inside a pair of black virtual reality goggles
  FloppaIngénieur · CC BY 4.0 · Source
• A close-up of human teeth with a yellowish layer of calculus
  DRosenbach at English Wikipedia · Public domain · Source
• Ancient teeth attached to a fragment of jaw, coated with a hard dark layer
  DrKellyBlevins · CC0 · Source
• A view from above of a round lake in a volcanic crater ringed by ridges
  NASA · Public domain · Source
• A concert hall full of audience watching a lit stage
  Unknown or not provided Retouched by Mmxx · Public domain · Source
• Pale basalt rock surfaces along a riverbank in the Deccan region
  Joseph H. Hartman · CC0 · Source
• Many traders standing in a historic stock exchange trading hall
  Alexandra Studios · Public domain · Source
• A group of people seated at tables listening to an instructor in a classroom
  U.S. Navy photo by Petty Officer 2nd Class Sebastian Portieleslopez · Public domain · Source
• A surface of mud and exposed rock on a beach, with elongated hollows between stones and a wooden fence behind
  Martin Bates · CC BY 4.0 · Source
• Books and a sheet of paper lying on a red table
  Bill Nicholls · CC BY-SA 2.0 · Source
• Dark pottery sherds arranged in two rows against a light background
  雪野滾滾 · CC0 · Source
• A singer on stage performing in front of musicians and an audience
  BeeMusicUK · CC BY-SA 4.0 · Source
• An empty hospital room with a bed, a sofa and a curtain
  JesusisGreat7 · CC0 · Source
• Players spread across a dirt pitch during a football match
  This Photo was taken by Timothy A. Gonsalves. Feel free to use my photos, but please mention me as the author. I would much appreciate if you send me an email tagooty@yahoo.com or write on my talk page, for my information. Please contact me before commercial use. Please do not upload an edited image here without consulting me. I would like to make corrections only at my own source to ensure that the changes improve the image and are preserved.Otherwise you may upload an edited image with a new name. Please use one of the templates derivative or extract. · CC BY-SA 4.0 · Source
• Visitors standing in front of paintings in a museum hall
  Sandra Soster · CC BY-SA 4.0 · Source
• A group of children sitting around instruments and playing together
  Mr. Reithmaier · CC BY 2.0 · Source
• A narrow path running between dense trees in a green forest
  Fredlyfish4 · CC BY-SA 4.0 · Source
• Two hikers walking on a wooded, misty trail
  Tamara Tica · CC BY-SA 4.0 · Source
• A transparent jar holding coins and banknotes
  stevepb · CC0 · Source
• A black blood pressure cuff connected to a tube and a round pressure gauge
  ML5 at English Wikipedia · Public domain · Source
• A view from above of a stock exchange trading floor with trader desks and screens
  S.aderogba · CC BY-SA 4.0 · Source
• A whale rising to the surface inside pale rings of bubbles and churning water
  Christin Khan, NOAA / NEFSC · Public domain · Source
• White chalk marks on prominent holds of a large boulder in a forest
  Mænsard vokser · CC BY-SA 4.0 · Source
• A person sitting in cold water outdoors with head and shoulders above the surface
  Dombovári Tibor · CC BY-SA 3.0 · Source
• Coral restoration structures and reef beneath blue water
  Sand Dollar Sports · CC BY 4.0 · Source
• A green football pitch and empty stands under a blue sky
  Fasach Nua at English Wikipedia · Public domain · Source
• A spacecraft photograph of the moon Europa, bright ice crossed by brown lines
  NASA/JPL/DLR · Public domain · Source
• A crowd standing together near a stage at a music festival under a bright sky
  Anna Hanks from Austin, Texas, USA · CC BY 2.0 · Source
• Small black and white fish swimming among pale coral branches
  NOAA Fisheries/Nate Hayes · Public domain · Source
• A humpback whale and its calf swimming together beneath a blue sea surface
  Charles J. Sharp · CC BY-SA 4.0 · Source
• An ancient brown clay vessel standing in a museum display
  Biswarup Ganguly · CC BY 3.0 · Source
• Traders at work in a crowded historic trading hall
  Alexandra Studios · Public domain · Source
• The silhouette of an aircraft against a bright sky
  Amin · CC BY-SA 4.0 · Source
• A person holding an open book and reading beside shelves of books
  Shixart1985 · CC BY 2.0 · Source
• A woman sitting outdoors reading an open book in front of a mountain landscape
  U.S. Forest Service- Pacific Northwest Region · Public domain · Source
• Hands typing on a black backlit computer keyboard
  Colin · CC BY-SA 4.0 · Source
• Many traders gathered around counters in an old stock exchange hall
  Thomas J. O'Halloran · Public domain · Source
• An aerial view of the islands around the sunken crater of Santorini in a blue sea
  Steve Jurvetson from Menlo Park, USA · CC BY 2.0 · Source
• A brown sea turtle swimming near the surface of blue water with its head breaking through
  Tony Hisgett from Birmingham, UK · CC BY 2.0 · Source
• A group of people sitting on the grass in a park, meditating together
  Konstantin Stepanov from Moscow, Россия · CC BY 2.0 · Source
• A narrow dirt path running between trees and fields in a Scottish valley
  Dave Kelly · CC BY-SA 2.0 · Source
• A narrow wrapped animal mummy standing in a museum display against a dark background; not one of the three mummies scanned
  Wilfredor · CC0 · Source
• A black and white photograph of a player in a wheelchair shooting a ball toward a hoop in a basketball hall
  Unknown authorUnknown author · CC BY-SA 3.0 · Source
• A basking shark swimming through blue water with its mouth open, a diver visible at a distance
  Public domain · Source
• Two reconstructed pottery vessels from the early Peiligang culture of China in a museum display; not the vessels examined in the study
  Furius · CC0 · Source
• A climbing boulder in a forest with white chalk marks on the holds
  Mænsard vokser · CC BY-SA 4.0 · Source
• Clusters of ripe red coffee cherries on green shrub branches
  Musimbi gerald · CC0 · Source
• A woman sitting on a sofa reading text on an e-reader; the text on the screen is not legible in the photograph
  picjumbo.com · CC0 · Source
• A flamingo with its head and beak submerged in shallow water beside its long legs, which carry small identification rings
  SuperJew · CC BY-SA 3.0 · Source
• A small oxpecker perched on the neck of a giraffe photographed close up against blue sky
  Panegyrics of Granovetter · CC BY-SA 2.0 · Source
• Chinook salmon swimming up a shallow river and throwing spray; the photograph is not of the Klamath
  Dan Cook (USFWS) · Public domain · Source
• A decorated Maya ceramic vessel displayed on a museum stand; an illustrative photograph, not one of the sherds tested
  Gary Todd from Xinzheng, China · CC0 · Source
• A gallery hall with paintings on the walls and small explanatory plaques beside them
  Sgerbic · CC BY-SA 4.0 · Source
• A Natufian stone mortar and pestle in a museum display; a similar tool rather than the experiment itself
  Gary Todd from Xinzheng, China · CC0 · Source
• A person with a backpack walking a snow-covered trail among dense forest trees
  U.S. Fish and Wildlife Service · Public domain · Source
• An ancient clay bowl decorated with a comb pattern from Finland; not one of the samples examined
  The National Board of Antiquities of Finland · CC BY 4.0 · Source
• A group of Roman bottles and glass vessels in greenish tints displayed behind museum glass
  Tangopaso · Public domain · Source
• A dark-feathered flesh-footed shearwater flying above sea waves; the plastic studied is not visible in the photograph
  Mike Prince from Bangalore, India · CC BY 2.0 · Source
• A narrow city street in Japan whose sidewalk is shaded by dense tree canopy; not the street measured in Montevideo
  pcs34560 · Public domain · Source
• A group of open-water swimmers moving one behind another along a race course
  Matthew Seely · CC BY-SA 4.0 · Source
• A person smelling a clear glass of wine at a tasting, with others visible behind
  che · CC BY-SA 2.5 · Source
• People seated in a hall applauding together; an illustrative photograph, not the lectures that were studied
  Cre8con · CC BY-SA 2.0 · Source
• A bumblebee on rough ground, an illustrative photograph rather than an image from the experimental rig
  Gerda Arendt · CC0 · Source
• A city street shaded under a row of mature trees
  Tony Monblat · CC BY-SA 2.0 · Source
• An artificial climbing wall with colored holds set in several routes; no climber in the photograph
  Eric Fischer · CC BY 2.0 · Source
• An audience applauding in front of a lit stage; not the piano concerts that were studied
  CC0 · Source
• Two broad fruit bodies of the ghost fungus growing on a tree trunk in daylight, with the night-time glow not visible
  Casliber · CC BY-SA 3.0 · Source
• Slices of blue cheese on bread, an illustrative photograph of the kind of food rather than a find from the mine
  MOs810 · CC BY-SA 4.0 · Source
• Large seaweeds forming a dense forest beneath the surface; an illustrative photograph of the kind of area surveyed
  Peter Southwood · CC BY-SA 3.0 · Source
• A flat greenish lichen growing on tree bark among mosses; an illustrative photograph of the species studied
  Norbert Nagel, Mörfelden-Walldorf, Germany · CC BY-SA 3.0 · Source
• Dancers performing in a public space in front of a standing audience; an illustrative photograph, not from the experiment
  Jakub Hałun · CC BY-SA 4.0 · Source
• Green Plagiomnium affine moss covering damp ground, one of the two species that stood out
  Michel Langeveld · CC BY-SA 4.0 · Source
• A brown moth resting on a pale surface near a light source at night; an illustrative photograph, not a tracked moth
  Jbjensen1 · CC BY 4.0 · Source
• Visitors looking at exhibits in a museum hall; the measuring wristband from the study is not visible
  lisa bat · CC BY 2.0 · Source
• Stems and flowers of the Corallorhiza striata orchid growing from the ground with no large green leaves
  Georgialh · CC BY-SA 4.0 · Source
• A soccer player taking a penalty in front of a goal with advertising boards behind it; not the display used in the experiment
  Chivista · CC BY-SA 4.0 · Source
• A blue reef fish swimming among coral branches underwater, an illustrative photograph rather than a record of the acidification experiment
  Jim Maragos, U.S. Fish and Wildlife Service · Public domain · Source
• A football referee in a green shirt signalling with his hand on a pitch with players standing; this is not a picture from the study
  Samson Ssemakadde · CC0 · Source
• A shallow seasonal pool among trees and grass; no road or salt visible in the photograph
  Oregon Department of Transportation · CC BY 2.0 · Source
• Two photographs of a rock in Namibia bearing engraved tracks; in one the engraved lines are digitally enhanced
  Breunig et al. (2023), PLOS ONE · CC BY 4.0 · Source
• A photograph of green stone beads and fragments at different stages of production on a black background, from the paper’s figure
  Pantos et al. (2023), PLOS ONE · CC BY 4.0 · Source
• A small bat detector strapped to a metal post on a mountain slope above the clouds
  Forest and Kim Starr · CC BY 3.0 us · Source
• The skull of a dog from the Roman period displayed on brown cloth
  Thorvaldsson · CC BY-SA 3.0 · Source
• Older men sitting around game tables in a shaded park
  Adam Jones from Kelowna, BC, Canada · CC BY 2.0 · Source
• A real tissue section of the cerebellum showing dark and light layers
  Berkshire Community College Bioscience Image Library · CC0 · Source
• A gray crater floor on Ceres holding a cluster of brilliant white patches
  JPL · Public domain (NASA) · Source
• Four black and white images of comet 67P with bright jets of dust leaving its surface
  JPL · Public domain (NASA) · Source
• The moon Enceladus as a dark circle with a broad bright jet leaving its pole into space
  JPL · Public domain (NASA) · Source
• The colorful hemisphere of Io with a blue volcanic plume visible on its left edge
  JPL · Public domain (NASA) · Source
• A large swirl of cloud on Jupiter with a small green dot marking a flash of lightning
  JPL · Public domain (NASA) · Source
• A large mammoth skeleton mounted in a museum display, with a photograph of the excavation behind it
  Thomas Quine · CC BY 2.0 · Source
• A woman writing in a notebook while holding a phone between her shoulder and ear
  Pedro Ribeiro Simões from Lisboa, Portugal · CC BY 2.0 · Source
• The cratered north pole of Mercury with permanently shadowed areas marked in yellow
  JPL · Public domain (NASA) · Source
• Tiny plastic fragments in pink, gold and black scattered on a white surface
  European Commission (Lukasz Kobus) · CC BY 4.0 · Source
• A young woman sitting in a chair listening through large headphones plugged into an old device
  Underwood & Underwood, photographer · Public domain · Source
• A choir in blue robes singing at rehearsal inside a stone cathedral
  Andy Dingley · CC BY-SA 3.0 · Source
• A purple human natural killer cell photographed under an electron microscope against black
  NIAID · CC BY 2.0 · Source
• Pluto in black and white with a large bright heart-shaped region to one side
  JPL · Public domain (NASA) · Source
• A young flooded rice field seen through green tree branches
  Judgefloro · Public domain · Source
• Saturn’s north pole in a reddish infrared image, with a hexagonal outline clearly visible
  JPL · Public domain (NASA) · Source
• A hollow copper vessel shaped as a bearded unicorn, with a dragon-like handle and a small tap in its chest
  German · CC0 (Met Open Access) · Source
• A long steel axe decorated with gold, with a wheel-lock pistol mechanism near the base of the handle
  German · CC0 (Met Open Access) · Source
• A decorated plate of pasta in a cheese and black pepper sauce on a wooden table
  T.Tseng · CC BY 2.0 · Source
• A dim interior with an inverted view of the outside world projected on the wall
  Unknown · CC0 (Met Open Access) · Source
• A close-up of a gray cat licking its fur, with white backward-facing spines visible on the tongue
  Jennifer Leigh · CC BY 2.0 · Source
• A Swedish ten-krona coin photographed close up against a white background
  Scaningen · CC BY-SA 4.0 · Source
• A silver-gilt figure of Diana seated on a stag, mounted on a wheeled base
  Joachim Friess · CC0 (Met Open Access) · Source
• The back of a head with short brown hair and two adjacent whorls at its center
  No machine-readable author provided. HorsePunchKid assumed (based on copyright claims). · CC BY-SA 3.0 · Source
• Five brown ducklings swimming in a single tight line across shallow water
  U.S. Fish and Wildlife Service - Midwest Region · Public domain · Source
• A small cream-colored clay jar with a handle and a side spout, painted with black birds and branches
  Greek · CC0 (Met Open Access) · Source
• A hand resting on black cloth with the nails of all five fingers seen close up
  Public domain · Source
• A pink flamingo standing on one leg in still water with the other leg folded under its body
  Deepak Sundar · CC BY-SA 4.0 · Source
• A close-up of a goat's head, with a wide horizontal black slot clearly visible as the pupil
  Ryancormack · CC BY-SA 4.0 · Source
• A dark metal plate in a gilt frame carrying eighteen tiny round images of the moon
  Antoine-François-Jean Claudet · CC0 (Met Open Access) · Source
• Three sequential photographs of a spider attached to a needle, opening and gripping another spider
  Authors of the study: Te Faye Yap, Zhen Liu, Anoop Rajappan, Trevor J. Shimokusu, Daniel J. Preston · CC BY 4.0 · Source
• A daguerreotype showing a woman’s face repeated in a ring of oval views
  Southworth and Hawes · CC0 (Met Open Access) · Source
• A conical leather-covered case with silver cutlery and a beaker laid beside it
  Charles Overing · CC0 (Met Open Access) · Source
• A small portable sundial with a folding gnomon and compass
  Jan Jansen Bockeltz · CC0 (Met Open Access) · Source
• A mallard resting on one leg on a low branch, its head tucked into its feathers with one eye visible
  hedera.baltica from Wrocław, Poland · CC BY-SA 2.0 · Source
• A faint green band of light above the curve of the Earth at night
  NASA Johnson Space Center · Public domain · Source
• A shoal of silver archerfish with black stripes swimming in a dark aquarium
  James St. John · CC BY 2.0 · Source
• A black and white cat lying on a pavement, ears up and gaze turned to one side
  Gerda Arendt · CC BY-SA 4.0 · Source
• A person holding the fingers of one hand and bending them back to crack the joints
  Jaysin Trevino from Evanston, IL, US · CC BY 2.0 · Source
• A curly black dog sitting on a sofa with its head tipped to one side
  Reid Campbell · CC0 · Source
• The Moon’s shadow as a broad dark patch on the Earth, seen past a white truss of the space station
  JSC · Public domain (NASA) · Source
• Astronaut David Scott standing on the lunar surface with both arms extended during the hammer and feather demonstration
  NASA Johnson Space Center / N/A · Public domain · Source
• A wide round hole opening in a layer of thin white cloud inside a blue sky
  Franz van Duns · CC BY-SA 4.0 · Source
• Dozens of insects leaving bright winding flight trails around a lamp at night
  Vaishak Kallore (Vaishak Kallore) · CC BY 3.0 · Source
• Yellow maple leaves backlit by a strong streetlight against a black night
  W.carter · CC BY 4.0 · Source
• A rectangular iron lock on a wooden door, decorated with arches and dense Gothic patterns
  European · CC0 (Met Open Access) · Source
• The gray Moon partly inside shadow, framed between white and dark parts of the space station
  JSC · Public domain (NASA) · Source
• Three bright dust devils casting long shadows across a gray plain on Mars
  JPL · Public domain (NASA) · Source
• A deep boot tread impression in the gray, coarse dust of the Moon
  NASA · Public domain · Source
• The black circular opening of a collapse pit standing out in a gray lunar surface pocked with small craters
  JPL · Public domain (NASA) · Source
• Silvery-blue wisps of cloud glowing in a deep twilight sky
  Reid Wiseman · Public domain (NASA) · Source
• The small moon Pan appears white against black, with a broad ridge encircling it like a belt
  Cassini · Public domain · Source
• A faint red electrical discharge branching upward above a distant storm
  NASA/Expedition 31 · Public domain · Source
• A brown tailless scorpion holding a striped cricket on a white surface
  Mattoni et al. · CC BY 2.5 · Source
• A honeybee standing at the center of a purple flower, gathering nectar
  John Severns (Severnjc) · Public domain · Source
• A black and yellow bumblebee gripping a green stem in close-up
  Charles J. Sharp · CC BY-SA 4.0 · Source
• A scattered herd of black cattle grazing in a green field beside a stream and autumn trees
  Y1997xf11 · Public domain · Source
• Four reddish desert ants dragging a pale piece of food together across sand
  Majbri wael · CC BY-SA 4.0 · Source
• Four men in coats and hats standing in a line in a historic black and white police photograph
  Unknown · No restrictions · Source
• A wet red slice of watermelon on a white plate beside other fruit
  Ralff Nestor Nacor · CC BY-SA 4.0 · Source
• Branching ice crystals grown on a cold surface
  Gerda Arendt · CC BY-SA 4.0 · Source
• A full moon shining through cloud above a dark lake, trees and a cabin in silhouette
  W.carter · CC BY-SA 4.0 · Source
• A long-horned brown goat facing the camera among green shrubs under a blue sky
  Dirk Beyer · CC BY-SA 3.0 · Source
• A red laboratory plate with white and grey bacterial colonies in various shapes
  Gianluco · CC BY-SA 4.0 · Source
• A large white circle of ice surrounded by cracked blue ice on a frozen lake
  SubArcticGuy · CC BY-SA 4.0 · Source
• Students sitting in rows at long desks in a classroom, in black and white
  Public domain · Source
• A spherical drop of water hovering at the center of a hot round metal surface
  Cryonic07 · CC BY-SA 3.0 · Source
• A dark mosquito standing on human skin with its proboscis against the surface
  JJ Harrison ( · CC BY-SA 3.0 · Source
• Rocks on cracked desert ground, with a long straight trail running behind one of them
  Romain Guy from San Francisco, USA · CC0 · Source
• A small colored spot of light in the clouds to the right of sunbeams above a dark horizon
  W.carter · CC0 · Source
• A black and white woodpecker gripping a rough tree trunk with its beak turned to the bark
  Zhanna Tyshchuk · CC BY-SA 4.0 · Source
• Three zebras standing in golden savannah grass with more of the herd behind them
  Volodymyr Burdiak · CC BY-SA 4.0 · Source
• A droplet held in mid-air above an ultrasonic transducer
  Richard Haberkern · CC BY-SA 4.0 · Source
• A small bat with a white stripe along its back clings to a wooden post and looks to one side
  Charles J. Sharp · CC BY-SA 4.0 · Source
• A metal bead chain rising in an arch above a glass cup before pouring down
  Stephan Sprinz · CC BY 4.0 · Source
• A white cockatoo in flight with spread wings against a plain bright background
  james_birdtourasia · CC0 · Source
• A small cuttlefish holding green seagrass stems with its arms spread in front of it
  Pierre mkrs · CC0 · Source
• A person crouching beside two dogs at a low stone wall, one dog lifting its nose to their hand
  KNOW MALTA by Peter Grima · CC BY-SA 2.0 · Source
• A gray dolphin leaping above blue sea with water streaming off its body
  NASA · Public domain · Source
• A herd of African elephants walking through yellow savanna among scattered acacia trees
  Floodmfx · CC0 · Source
• A black glossy liquid forming a dense field of sharp spikes above a magnet
  ChemGeeks · CC BY-SA 2.0 · Source
• A pale white arc stretching above a path and a snowy landscape in gray fog
  Kurinurm · CC0 · Source
• Thin colored rings surrounding the dark shadow of an observer on a bright cloud layer below
  WS62 · CC BY-SA 3.0 · Source
• A close view of a brown Icelandic horse’s face, with a dark eye and a pale mane falling to one side
  Carl Young · CC BY-SA 4.0 · Source
• A thin spike of ice rising from the surface of a frozen ice cube
  Jörg Weise Bremen · CC BY-SA 4.0 · Source
• A large white lens-shaped cloud hanging above a dark snow-covered mountain peak
  grumpylumixuser · CC BY 3.0 · Source
• A pale lunar rainbow arcing over a wide waterfall and spray under a dark night sky
  Scolopendra33 · CC BY-SA 4.0 · Source
• A large black raven standing on rocky ground with its beak turned to one side
  Diliff · CC BY-SA 3.0 · Source
• The head of a white woolly sheep with ears outstretched filling the frame
  Francesco Canu · CC BY-SA 4.0 · Source
• Cylindrical rolls of snow scattered across a white field
  James St. John · CC BY 2.0 · Source
• A tiny hairy jumping spider standing on the tip of a human finger in golden light
  Basile Morin · CC BY-SA 4.0 · Source
• Feathery streaks of rain hanging below a cloud and fading before reaching the ground
  Famartin · CC BY-SA 3.0 · Source
• A bumblebee dusted with white pollen sitting in the center of an open magenta flower
  gailhampshire from Cradley, Malvern, U.K · CC BY 2.0 · Source
• A large heap of Brazil nuts in their shells on a market stall, with open sacks of nuts beside it
  Lima Andruška from Rio de Janeiro, Brazil · CC BY-SA 2.0 · Source
• A grey tabby cat asleep curled on a wicker chair under a white table
  George Chernilevsky · Public domain · Source
• A round coffee stain dried on a white surface, with dark brown edges and a pale middle
  De-okin (talk) 19:07, 10 September 2012 (UTC) · CC BY 3.0 · Source
• Golden sunbeams slanting through thin mist above a green field surrounded by trees
  Benh LIEU SONG (Flickr) · CC BY-SA 4.0 · Source
• A small brown duckling swimming on blue water with its head turned toward the camera
  Paul Danese · CC BY-SA 4.0 · Source
• A close-up of a gecko foot, with dense rows of fine ridges visible on every toe
  FurryScaly · CC BY-SA 2.0 · Source
• Round water droplets resting on a green leaf without spreading
  Aathavan jaffna · CC BY-SA 3.0 · Source
• A brown house mouse peering out from a round burrow entrance in dark soil
  Grant Singleton, CSIRO · CC BY 3.0 · Source
• A reddish-brown octopus peering out from between rocks, one eye and its suckered arms visible in close-up
  Sylke Rohrlach · CC BY-SA 4.0 · Source
• A grey African parrot standing on a wooden perch against a bright background
  Found Animals Foundation · CC BY-SA 2.0 · Source
• A black and white Adelie penguin standing alone on bright snow
  Godot13 · CC BY-SA 4.0 · Source
• A white Yorkshire pig standing in a dirt pen beside a wooden fence
  Jean · CC BY 2.0 · Source
• A closed brown pine cone resting on dry pine needles against a blurred forest background
  Petar Milošević · CC BY-SA 4.0 · Source
• A sealed glass funnel under a clear bell jar, holding dark pitch with a drop hanging from it
  John Mainstone, University of Queensland · CC BY-SA 3.0 · Source
• A brown rat standing at the edge of a pool of water with its body reflected in the surface
  Charles J. Sharp · CC BY-SA 4.0 · Source
• Golden rolling sand dunes in front of a purple mountain ridge under a blue sky
  Brocken Inaglory · CC BY-SA 3.0 · Source
• A transparent water bear with a wrinkled body and eight legs seen in a microscope image
  Philippe Garcelon · CC BY 2.0 · Source
• A reddish water strider standing on a pond, each leg making a bright dimple in the water
  Charles J. Sharp · CC BY-SA 4.0 · Source
• A black American crow standing sideways on a thin branch against a blue sky
  Rhododendrites · CC BY-SA 4.0 · Source
• A small stick bower standing on forest ground, with gray and red objects scattered on the court in front of it
  John Robert McPherson · CC0 · Source
• A dark Chinese alligator lying in shallow water behind glass, rocks beside it
  Public domain · Source
• A narrow pillar of light rising above a snowy forest, with the low sun behind thin cloud
  Derrellwilliams · CC BY-SA 4.0 · Source
• A dark basalt cliff divided into dense vertical columns, with broken rock at its foot
  Daniel Mayer · CC BY-SA 3.0 · Source
• A short band of glowing rainbow colors inside gray cloud above treetops
  WIZAURADPRO · Public domain · Source
• A branching frost crystal in pink and blue standing above a dark speckled surface
  Great Sand Dunes National Park and Preserve · Public domain · Source
• A rough sand-colored lump of fulgurite on a black background
  Beeblaine · CC BY 4.0 · Source
• Dense rounded cloud pouches hanging beneath a golden and darkening cloud layer
  Chrisg21090 at English Wikipedia · Public domain · Source
• Clusters of long transparent ice crystals pushing up out of brown soil
  Wasrts · CC BY-SA 4.0 · Source
• Hundreds of round ice discs packed together on a blue sea out to the horizon
  division, CSIRO · CC BY 3.0 · Source
• A dense field of sharp white snow blades casting grey shadows on a slope
  Mark Sanderson (The original uploader was Lord.high.kevin at English Wikipedia.) · CC BY-SA 3.0 · Source
• A pale reindeer standing on forest floor covered in needles, its young antlers still in velvet
  Bernard Gagnon · CC0 · Source
• A black and yellow paper wasp standing in profile on a cluster of yellow flowers
  Zygy · CC0 · Source
• A dark gray cloud base rumpling into broad waves above silhouetted trees
  Tornado Elliott · CC BY 4.0 · Source
• A perfect dark blue circle ringed by a bright reef, seen from above in a turquoise sea
  LovingOop · CC BY-SA 4.0 · Source
• Dark tree crowns forming a network of white sky channels, seen looking straight up
  Akasmita · CC BY-SA 4.0 · Source
• A dark lustrous coating on desert sandstone, with lighter rock exposed where it has been chipped away
  Zion National Park · Public domain · Source
• Hundreds of pale round patches dotting an orange desert plain in an aerial photograph
  Olga Ernst & Hp.Baumeler · CC BY-SA 4.0 · Source
• A dense mass of fine white ice fibers standing out from a dead brown branch
  Rosser1954 · CC BY-SA 4.0 · Source
• Thin orange rock spires rising in dense ranks between wooded slopes under a blue sky
  “Jon Zander(digon3)” · CC BY-SA 3.0 · Source
• A dried mud flat broken into polygons by cracks
  Dexter Perkins · CC0 · Source
• A thin cloud in pink, green and gold glowing in a dark twilight sky
  Thincat · CC0 · Source
• Dark rounded lava lobes piled on a blue seafloor, photographed from an underwater robot
  National Oceanic & Atmospheric Adminstration (NOAA) · Public domain · Source
• An enormous grey cloud column rising above a layer of smoke and filling the sky
  Merrin Macleod · CC BY-SA 4.0 · Source
• A long horizontal tube of cloud stretching across the sky ahead of a storm
  Eazydp · Public domain · Source
• White salt ridges forming large polygons on dark ground, with a hammer laid among them for scale
  Dick Culbert from Gibsons, B.C., Canada · CC BY 2.0 · Source
• Clumps of white foam scattered on gray water beside an urban shoreline under blue sky
  Brocken Inaglory · CC BY-SA 3.0 · Source
• Brown rounded stromatolite mounds rising out of shallow water beside a low wooden fence
  BT.KSH · CC BY-SA 3.0 · Source
• A rock ceiling riddled with dozens of rounded hollows forming a honeycomb texture
  Aotemulung · CC BY-SA 4.0 · Source
• A broad white wave front advancing up a river past a crowd standing along a green embankment
  EditQ · CC BY-SA 4.0 · Source
• A swirling vortex of water in a narrow sea channel
  Suicasmo · CC BY-SA 4.0 · Source
• Used, stained baseballs piled together in a container
  Scott McLeod from Lafayette, CO, United States · CC BY 2.0 · Source
• Glowing blue streaks breaking in dark waves against a night shore with distant lights
  Doricono · CC BY-SA 4.0 · Source
• White lightning branching from dark night clouds above a black, still line of water
  Fernando Flores from Caracas, Venezuela · CC BY-SA 2.0 · Source
• White woolly colonies of cochineal scale insects covering green areas of a prickly pear pad
  Juandev · CC BY-SA 3.0 · Source
• A long black crack crossing white ice on a frozen lake, with people and vehicles far off
  Aerohod · CC BY-SA 4.0 · Source
• A brown hovering shape above the horizon on a sandy shore, detached from the ground
  DisillusionedBitterAndKnackered · CC BY-SA 4.0 · Source
• A narrow tall column of flame spinning between charred tree trunks under an orange smoke-filled sky
  U.S. Fish and Wildlife Service Northeast Region · CC BY 2.0 · Source
• Two small splashes on open gray water, left behind by a stone skipping across the surface
  SriMesh · CC BY-SA 3.0 · Source
• Dozens of round white bubbles frozen in layers inside clear dark ice
  U.S. Geological Survey from Reston, VA, USA · Public domain · Source
• Several spiny murex shells in brown and white tones on a black background
  H. Zell · CC BY-SA 3.0 · Source
• A small heap of dark blue pigment powder in a round white dish
  Saalebaer · CC0 · Source
• A dense layer of pale pumice stones covering a blue sea surface near a green shore
  Kugel~commonswiki · CC BY-SA 4.0 · Source
• A golden pyrite crystal with square faces and sharp edges protruding from gray rock
  Kritzolina · CC BY-SA 4.0 · Source
• A towering wave crest rising above a heavy sea
  F1jmm · CC0 · Source
• A small rough black tektite with rounded pits resting on a white background
  James St. John · CC BY 2.0 · Source
• A sheet of clear glass covered in a dense net of small polygonal fragments
  Ox1997cow · CC BY-SA 3.0 · Source
• Three old white tennis balls side by side on a pale surface
  Farkle Griffen · CC0 · Source
• White lightning branching in front of an enormous brown ash column rising from a volcano, a hand filming in the foreground
  File:Taal Lightning Strike During Eruption.jpg: etrhamjr (talk · contribs) derivative work (cropping): Hike395 · CC BY-SA 4.0 · Source
• A narrow grey funnel descending from a dark cloud to a choppy sea, raising white spray around its base
  Royal Broil from East Central, Wisconsin, USA · CC BY-SA 2.0 · Source
• A pale, half-transparent cube of aerogel resting on an open palm
  Courtesy NASA/JPL-Caltech · Public domain · Source
• A white and brown barn owl flying against a green background with its wings fully spread
  Peter K Burian · CC BY 4.0 · Source
• Four metal plates of different shapes covered in symmetrical sand patterns on a wooden stand
  Exhibit made by Estes Objethos Atelier, photo by Rodrigo Tetsuo Argenton · CC BY-SA 4.0 · Source
• A dark common swift flying against a bright sky with its long wings spread
  Alexis Lours · CC BY 4.0 · Source
• A gray curling stone with a red handle resting on rough ice
  Sigve Indregard from Oslo, Norway · CC BY 2.0 · Source
• The head and front body of a dark electric eel seen close up in clear water
  Photo by David J. Stang · CC BY-SA 4.0 · Source
• A black Onymacris unguicularis beetle with ridged wing cases standing on desert sand
  Schnobby · CC BY-SA 3.0 · Source
• A large black and white frigatebird gliding in profile under grey skies
  Matt MacGillivray from Toronto, Canada · CC BY 2.0 · Source
• A small green hummingbird hovering with its wings spread and blurred by motion
  Pslawinski · CC BY-SA 4.0 · Source
• A transparent rectangular calcite crystal lit on a small stand against a black background
  Daderot · CC0 · Source
• Two decorated metal hemispheres with a valve and handle shown facing each other on a black background
  Rama · CC BY-SA 3.0 fr · Source
• Transparent soap films stretched inside a cubic wire frame against a grey background
  Daniela_deGol · CC BY 4.0 · Source
• A long narrow black obsidian blade displayed upright against a light gray background
  CC0 · Source
• A close-up of the eye in a peacock feather in turquoise, green and gold against black
  Mister rf · CC BY-SA 4.0 · Source
• Several red and green Nepenthes pitchers hang from a plant above damp rock
  CEphoto, Uwe Aranas · CC BY-SA 3.0 · Source
• An ancient quipu spread on a white board, hundreds of knotted strings fanning out from a main cord
  bobistraveling · CC BY 2.0 · Source
• A complete Roman bronze dodecahedron, with a round hole in every face and a knob at every corner
  Carole Raddato from Frankfurt, Germany · CC BY-SA 2.0 · Source
• A round, colorful soap bubble floating against a blurred green background
  Brocken Inaglory. The image was edited by user:Alvesgaspar · CC BY-SA 3.0 · Source
• A black and white toco toucan in profile with a large orange beak against green leaves
  AntanO · CC BY-SA 4.0 · Source
• A dark ant trapped inside a clear golden piece of amber against a blue background
  Brocken Inaglory · CC BY-SA 3.0 · Source
• A feather shuttlecock in flight against a dark background
  Kate Ter Haar from Cedarville, MI, USA · CC BY 2.0 · Source
• A rust-red flow spilling down a white glacier front above rocky ground
  Peter Rejcek, NSF · Public domain · Source
• A Morpho butterfly on a leaf, one wing brilliant blue and the other brown and patterned with circles
  GabrielleMerk · CC BY-SA 4.0 · Source
• A pale, uneven lump of fat sitting inside a dark, ancient wooden vessel
  Navaro · CC BY-SA 3.0 · Source
• A clear glass model of a bottle whose neck curves back through its own wall
  DavidWBrooks · CC BY-SA 4.0 · Source
• Dozens of deep blue lapis lazuli fragments with white veins and pyrite glints in a red basket
  Guy Courtois · CC BY-SA 3.0 · Source
• A round clay disc covered in dense spiral rows of stamped symbols
  C messier, edit by Bammesk · CC BY-SA 4.0 · Source
• Reddish pink streaks and patches spreading across a wide field of white snow
  Tsy1980 · CC BY-SA 4.0 · Source
• A hanging Japanese wooden tablet with colorful drawings of circles and triangles beside vertical script
  Momotarou2012 · CC BY-SA 3.0 · Source
• A rectangular blue-green Egyptian faience senet board with incised squares and two small playing pieces on it
  Anonymous (Egypt)Unknown author · Public domain · Source
• A white floating iceberg with parallel dark bluish stripes along its side above a calm sea
  Snowolf · CC BY-SA 4.0 · Source
• Five members of the American central bank board seated around a meeting table in 1937
  Harris & Ewing, photographer · Public domain · Source
• A colorful Day of the Dead altar with candles, marigolds, skull figures and family photographs
  RubeHM · CC BY-SA 4.0 · Source
• The creased back of a historic share certificate covered in handwritten signatures
  Angel Gonzalez Sanfeliu · Public domain · Source
• A dark aircraft wing above a layer of cloud at sunrise
  Kenrick95 · CC BY-SA 4.0 · Source
• A woman sitting outdoors reading an open book resting on her knees
  FOTO:Fortepan — ID 55473: Adományozó/Donor: Magyar Bálint. archive copy at the Wayback Machine · CC BY-SA 3.0 · Source
• A row of colorful old paperback covers side by side
  Blau-Barcelona · CC BY-SA 4.0 · Source
• A wheelchair basketball player taking a free throw in a lit arena
  Unknown authorUnknown author · CC BY-SA 3.0 · Source
• A screen of market prices with sharp movements on the chart
  AnonymousUnknown author · Public domain · Source
• A tight bunch of colorful cyclists riding together on a mountain road
  For a gallery of some more of my uploaded pictures see: here. · CC0 · Source
• A goalkeeper standing in the center of the goal facing a kicker during a penalty shootout in a stadium
  Dɐ · CC0 · Source
• A huge egg-shaped Georgian clay vessel standing outdoors beside a modern building
  MHM55 · CC BY-SA 4.0 · Source
• An open book with a metal pendant on a chain lying across it on a pale wooden table
  freestocks.org freestocks · CC0 · Source
• A printed American Treasury bill from 1969 with a face value of one hundred thousand dollars
  JHerbstman · Public domain · Source
• A storyteller standing on a stage before colorful scenery, with an audience in silhouette at the front
  Yemi festus · CC BY 4.0 · Source
• A close view of an old open book on a table, its pages curving upward
  Bibliothek Wissenschaftspark Albert Einstein · CC BY-SA 4.0 · Source
• An amateur English football team in 1914 posed in two rows on the pitch
  CC BY 4.0 · Source
• A tennis player in a dark shirt swinging a racket overhead on a serve
  Newinfoeveryminute · CC BY-SA 4.0 · Source
• A dense crowd of traders in suits on a historic London exchange floor
  Bain News Service, publisher · Public domain · Source
• Two people walking hand in hand on a sandy beach, photographed from behind at hand height
  www.Pixel.la Free Stock Photos · CC0 · Source
• A Japanese rice bowl topped with vegetables, raw fish, seaweed and sliced egg
  David Pursehouse from Kawasaki, Japan · CC BY 2.0 · Source
• A small hiker standing on a rocky ridge facing mountain peaks and a wide valley
  Sujitkun Khantayana parkkun · CC0 · Source
• Creased paper banknotes stacked on each other in close-up
  SALTOnline from Istanbul, Turkey · No restrictions · Source
• A baseball batter standing in the box looking toward the pitcher
  Tulane Public Relations · CC BY 2.0 · Source
• Stacks of coins growing taller from left to right
  CEphoto, Uwe Aranas · CC BY-SA 3.0 · Source
• A hand holding a phone showing a portfolio of share prices
  Jakub Hałun · CC BY 4.0 · Source
• A goalkeeper diving left as a penalty kick is struck toward the goal
  Voltmetro · CC BY-SA 4.0 · Source
• A passenger aircraft flying above a cloud layer at sunset
  Andrey Filippov 安德烈 from Moscow, Russia · CC BY 2.0 · Source
• A long corridor between crowded library bookshelves
  University of Illinois Library · CC BY 2.0 · Source
• Colorful lottery balls inside a rotating wooden drum
  pycon jp · CC BY 2.0 · Source
• A dense field of marathon runners on a city street
  Marie-Lan Nguyen · CC BY 3.0 · Source
• Visitors standing in a white gallery space looking at works hung on the walls
  Sgerbic · CC BY-SA 4.0 · Source
• Visitors moving through a gallery hung with paintings
  Daniel Mietchen · CC0 · Source
• A woman sitting by a window holding an open book in both hands
  Shixart1985 · CC BY 2.0 · Source
• The worn spines of several old books standing tightly together
  Tom Murphy VII · CC BY-SA 3.0 · Source
• A player striking a penalty while the goalkeeper dives toward one corner of the goal
  Mr.ちゅらさん · CC0 · Source
• An archer drawing a bow and fixing her gaze on the target before releasing
  Marylandstater at English Wikipedia · Public domain · Source
• A person typing on a laptop beside an open notebook
  Jules Verne Times Two · CC BY-SA 4.0 · Source
• A traveler looking out over an unfamiliar city
  Vsatinet · CC0 · Source
• A souvenir object on a shelf at home
  Michael Grabois (User:Wizardimps) · CC BY-SA 2.0 · Source
• Two people walking barefoot hand in hand on wet sand beside the sea
  www.Pixel.la Free Stock Photos · CC0 · Source
• Footballers competing in a stadium set against a high mountain backdrop
  Maoileann · CC BY-SA 4.0 · Source
• A person holding an open book with headphones resting around their neck
  Shixart1985 · CC BY 2.0 · Source
• A pale stone memorial museum building surrounded by trees and an entrance path
  Taiwan Junior · CC BY 3.0 · Source
• An open book held up in front of another reader blurred in the background
  Shixart1985 · CC BY 2.0 · Source
• An almost empty basketball hall with a floodlit court at its center
  BrianReading · CC BY-SA 3.0 · Source
• A hand holding a pen and writing in an open notebook resting on the knees
  Kristin Hardwick · CC0 · Source
• Packed stands of sports fans during a game in a stadium
  AGilhooley · CC BY-SA 3.0 · Source
• A trading floor with dense rows of empty computer desks
  Fixedsun · CC0 · Source
• A night market food stall lit by gas lamps, with a vendor serving a dish
  Hussein Simba · CC BY-SA 4.0 · Source
• A museum guide explaining a wall of colorful artworks
  Kritzolina · CC BY-SA 4.0 · Source
• A narrow path covered in fallen leaves running between mossy trees in a forest
  WelshDave · CC BY-SA 4.0 · Source
• The printed title page of an 1825 volume of poems by Robert Burns
  Jones & Co. 1825. · Public domain · Source
• An open printed book beside a tablet showing text
  Jules Verne Times Two · CC BY-SA 4.0 · Source
• Children of different ages playing soccer in a sports hall
  Airman 1st Class Tammie Ramsouer · Public domain · Source
• Two paddlers in a red kayak moving along a clear river between rocks
  Krzysztof Golik · CC BY-SA 4.0 · Source
• A pink piggy bank standing against a white background
  Fabian Blank blankerwahnsinn · CC0 · Source
• A reader partway through a paperback, thumb holding the remaining pages
  Vouliagmeni · CC BY-SA 4.0 · Source
• Passengers sitting in aircraft seats during a flight
  User:YourUsername · CC BY 2.0 · Source
• A straw hat, bag, camera, sandals and phone laid out ready for a trip
  Thomas Martinsen faceline · CC0 · Source
• The top of a colorful beach umbrella against a clear blue sky
  Juliancolton · CC BY-SA 4.0 · Source
• A mathematical illustration of a ball separating into pieces and forming two balls
  Benjamin D. Esham (<a href="//commons.wikimedia.org/wiki/User:Bdesham" title="User:Bdesham">bdesham</a>) · Public domain · Source
• Three test tracks with balls running on straight and curved paths
  <a href="//commons.wikimedia.org/w/index.php?title=User:Mkwadee&amp;action=edit&amp;redlink=1" class="new" title="User:Mkwadee (page does not exist)">Mkwadee</a> · CC BY-SA 4.0 · Source
• A reconstruction of densely packed houses at Catalhoyuk with entrances through the roofs
  <a href="//commons.wikimedia.org/wiki/User:Dosseman" title="User:Dosseman">Dosseman</a> · CC BY-SA 4.0 · Source
• Histograms of sample means converging toward a bell curve
  <a href="//commons.wikimedia.org/w/index.php?title=User:AhmedHan&amp;action=edit&amp;redlink=1" class="new" title="User:AhmedHan (page does not exist)">AhmedHan</a> · CC BY-SA 3.0 · Source
• A glass of water with ice cubes, illustrating the cold water experiment
  Public domain · Source
• The mouth of Denisova Cave in the Altai mountains
  <a href="//commons.wikimedia.org/w/index.php?title=User:Deminalex&amp;action=edit&amp;redlink=1" class="new" title="User:Deminalex (page does not exist)">Демин Алексей Барнаул</a> · CC BY-SA 4.0 · Source
• A diagram of the enteric nervous system and the communication between gut and brain
  Natale, Gianfranco, Larisa Ryskalin, Gabriele Morucci, Gloria Lazzeri, Alessandro Frati, and Francesco Fornai · CC BY 4.0 · Source
• A bundle of optical fibers glowing at their cut ends
  <a href="//commons.wikimedia.org/wiki/User:Bquast" title="User:Bquast">Bquast</a> · CC0 · Source
• A replica of the first point-contact transistor with its triangular contact
  Federal employee · Public domain · Source
• A historic portrait of Robert FitzRoy
  Hemus, Charles 1849?-1925 · Public domain · Source
• A flow diagram of ammonia production by the Haber-Bosch process
  <a href="//commons.wikimedia.org/wiki/User:Sven" title="User:Sven">User:Sven</a> · CC BY-SA 4.0 · Source
• A ball covered in fibers with a swirl at one point
  <a href="//commons.wikimedia.org/wiki/User:RokerHRO" title="User:RokerHRO">RokerHRO</a> · CC BY-SA 3.0 · Source
• A grid of binary digits with one highlighted
  <a href=" class="extiw" title="en:User:Cburnett">en:User:Cburnett</a> · CC BY-SA 3.0 · Source
• A person in a gorilla suit, recalling the attention experiment
  <ul><li><a rel="nofollow" class="external text" href=" dairy</a></li> <li>derivative work: <a href="//commons.wikimedia.org/wiki/User:Hic_et_nunc" title="User:Hic et nunc">Hic et nunc</a></li></ul> · CC BY 2.0 · Source
• John Snow’s cholera map, with death marks clustered around Broad Street
  <a href="//commons.wikimedia.org/w/index.php?title=User:Netcorredor&amp;action=edit&amp;redlink=1" class="new" title="User:Netcorredor (page does not exist)">Netcorredor</a> · CC0 · Source
• A human liver in a medical anatomical diagram
  <a href="//commons.wikimedia.org/wiki/User:%D8%B9%D9%84%D8%A7%D8%A1" title="User:علاء">علاء</a> · CC BY-SA 3.0 · Source
• A Roman glass cup glowing red when lit from behind
  Chappsnet · CC BY 4.0 · Source
• An oceanographic research ship moored at a dock, in black and white
  <ul><li>derivative work: <a href="//commons.wikimedia.org/w/index.php?title=User:Who_killed_Bambi_%3F&amp;action=edit&amp;redlink=1" class="new" title="User:Who killed Bambi ? (page does not exist)">Who killed Bambi ?</a> (<a href="//commons.wikimedia.org/wiki/User_talk:Who_killed_Bambi_%3F" title="User talk:Who killed Bambi ?">talk</a>)</li> <li><a href="//commons.wikimedia.org/wiki/File:Oceanic.Stripe.Magnetic.Anomalies.Scheme.gif" title="File:Oceanic.Stripe.Magnetic.Anomalies.Scheme.gif">Oceanic.Stripe.Magnetic.Anomalies.Scheme.gif</a>: <a href="//commons.wikimedia.org/wiki/User:Kurgus" title="User:Kurgus">Kurgus</a></li></ul> · Public domain · Source
• Dense mangrove roots in shallow water and mud
  Dan Lundberg · CC BY-SA 2.0 · Source
• A colored lidar map showing Maya structures beneath the forest
  Carlos R. Chiriboga/PAET · CC BY-SA 4.0 · Source
• A paper model of a Möbius strip with a single half twist
  <a href="//commons.wikimedia.org/wiki/User:Dbenbenn" title="User:Dbenbenn">David Benbennick</a> · CC BY-SA 3.0 · Source
• The view from the window at Le Gras, the oldest surviving photograph
  <a href="//commons.wikimedia.org/wiki/User:Daderot" title="User:Daderot">Daderot</a> · Public domain · Source
• A colorful Penrose tiling with a non-repeating pattern
  <a href="//commons.wikimedia.org/w/index.php?title=User:PeterStampfliAvenches&amp;action=edit&amp;redlink=1" class="new" title="User:PeterStampfliAvenches (page does not exist)">Peter Stampfli</a> · CC BY 4.0 · Source
• Human red blood cells under an electron microscope
  Janice Carr · Public domain · Source
• A diagram of the rubber hand experiment, with the real hand hidden and two brushes
  Laura E Downey, Phillip Fletcher, Hannah L Golden, Colin J Mahoney, Jennifer L Agustus, Jonathan M Schott, Jonathan Rohrer, Jon Beck, Simon Mead, Martin N Rossor, Sebastian James Crutch, Jason Warren · CC BY 3.0 · Source
• A historic smallpox vaccination poster
  CC BY 4.0 · Source
• Oranges stacked in dense layers on a market stall
  <a href="//commons.wikimedia.org/wiki/User:JJ_Harrison" title="User:JJ Harrison">JJ Harrison</a> (<a rel="nofollow" class="external free" href=" · CC BY-SA 3.0 · Source
• A historic Morse key of the kind used to send telegraph signals
  <a href="//commons.wikimedia.org/wiki/User:Hp.Baumeler" title="User:Hp.Baumeler">Hp.Baumeler</a> · CC BY-SA 4.0 · Source
• A wooden tablet written in ink from the fort at Vindolanda
  <a href="//commons.wikimedia.org/wiki/User:F%C3%A6" title="User:Fæ">Fæ</a> · CC BY-SA 3.0 · Source
• A lone runner on a wide path between two rows of park trees
  NPS Photo · Public domain · Source
• Several white waterfalls pouring between green vegetation into blue pools
  Skot · CC BY-SA 4.0 · Source
• A man with headphones around his neck reading an old book in front of a bookshelf
  Shixart1985 · CC BY 2.0 · Source
• Plastic waste floating and piling along a river running through a residential area
  JFVelasquez Floro · CC0 · Source
• Dozens of empty glass jars and lids arranged on a kitchen surface
  Nutrition, Food Safety &amp; Health · CC0 · Source
• An old bathtub outdoors filled with icy water and a thin layer of ice
  Alan Hughes · CC BY-SA 2.0 · Source
• A tall stone moai standing on a grassy slope, with more statues sunk behind it
  Mc vc · CC BY-SA 4.0 · Source
• A dense dark conifer forest with patches of white snow between the trunks
  VadosSx · CC BY 4.0 · Source
• A hand holding a pen above an open notebook resting on a woman’s lap
  Kristin Hardwick · CC0 · Source
• A basketball hoop with a chain net photographed from below against a blue sky
  Ermell · CC BY-SA 4.0 · Source
• A puppeteer lifting a marionette on a colorful puppet theater stage
  Jacklee · CC BY-SA 4.0 · Source
• Gullied slopes on Mars in false color, with long dark streaks on the ground
  JPL · Public domain (NASA) · Source
• The black and white keys of an old wooden piano, worn with use
  Ser Amantio di Nicolao · CC0 · Source
• A hand resting a pen on an open notebook, with a laptop and a mug blurred behind it
  Shixart1985 · CC BY 2.0 · Source
• The remains of a stone arch of a Roman aqueduct standing beside a country road
  PaestumPaestum · CC BY 4.0 · Source
• A woman performing a barbell squat in a gym
  Nenad Stojkovic · CC BY 2.0 · Source
• A woman in sportswear stretching one arm overhead beside a window
  Shixart1985 · CC BY 2.0 · Source
• A rusted, hornless Viking iron helmet in a museum case
  Wolfmann · CC BY-SA 4.0 · Source
• A full cup of coffee held in a hand, the surface rippling
  Karen Cantú Q karencantuq · CC0 · Source
• A stretch of reef where the coral has turned stark white
  Jay Galvin · CC BY 2.0 · Source
• The Crab Nebula, a branching cloud of gas in orange and blue
  NASA , ESA , J. Hester and A. Loll (Arizona State University) · Public domain · Source
• A crowded pedestrian crossing at a city intersection
  Dick Thomas Johnson from Tokyo, Japan · CC BY 2.0 · Source
• A reddish-orange Florida carpenter ant with a dark abdomen gripping a plant stem
  Judy Gallagher · CC BY 2.0 · Source
• An Egyptian fruit bat hanging upside down from a branch
  MathKnight and Zachi Evenor · CC BY 4.0 · Source
• A close-up of a black crow against a blurred green background
  Marie-Lan Taÿ Pamart · CC BY 4.0 · Source
• A broad-bodied cuttlefish swimming above a seabed covered in algae
  Diego Delso · CC BY-SA 4.0 · Source
• A parasitic dodder vine coiled around the stem of another plant, in close-up
  Yuliya Krasylenko · CC BY 4.0 · Source
• Two dolphins swimming side by side in open sea
  Charles J. Sharp · CC BY-SA 4.0 · Source
• A group of Asian elephants bathing in shallow water
  Charles J. Sharp · CC BY-SA 4.0 · Source
• A baby asleep in a crib among soft toys
  Sambath Raj 009 · CC BY-SA 4.0 · Source
• White and yellow snapdragon flowers in close-up
  Sabina Bajracharya · CC BY-SA 4.0 · Source
• White fungal mycelium growing across a substrate in a laboratory dish
  Zenyrgarden · CC BY-SA 4.0 · Source
• A microscope image of brush-like spore-bearing structures in an Arthrobotrys fungus
  Ninjatacoshell · CC BY-SA 3.0 · Source
• A hermit crab peering out of its shell among algae on the seabed
  Diego Delso · CC BY-SA 4.0 · Source
• A kea parrot poking about on gravelly ground
  Krzysztof Golik · CC BY-SA 4.0 · Source
• A volunteer wired to sensors during a sleep study in a sleep laboratory
  邱鈺鋒 · CC BY-SA 4.0 · Source
• A green tobacco plant growing in soil in a field
  Jebulon · CC0 · Source
• A Sumatran orangutan moving between trees in tropical forest
  Yaumilicious · CC BY-SA 4.0 · Source
• A young seedling of thale cress, a small research plant in the mustard family
  Alena Kravchenko · CC BY-SA 4.0 · Source
• A microscope close-up of a red predatory mite
  Attelabus · CC BY-SA 4.0 · Source
• A brown rat standing in shallow water holding food in its mouth
  Charles J. Sharp · CC BY-SA 4.0 · Source
• A close view of a person smelling flowers, illustrating the sense of smell
  VGrigas (WMF) · CC BY-SA 3.0 · Source
• A clinician carrying out a hearing test on a patient
  U.S. Navy photo by Photographer's Mate 2nd Class Jayme Pastoric. · Public domain · Source
• Three young people standing and talking outdoors
  Alexis Brown alexisrbrown · CC0 · Source
• Two men looking at their phones
  Greg Hernandez from California, CA, USA · CC BY 2.0 · Source
• A close view of a human eye with a pale colored iris
  Qirille · CC BY-SA 4.0 · Source
• A clinician performing an ultrasound scan on a patient
  U.S. Navy photo by Mass Communication Specialist 3rd Class Kristopher Wilson · Public domain · Source
• A close-up photograph of an older man’s face
  Jorge Royan · CC BY-SA 3.0 · Source
• A woman wiping someone’s forehead with a handkerchief
  USFWS Mountain Prairie · Public domain · Source
• An ophthalmologist examining a patient at a slit lamp
  U.S. Navy photo by Mass Communication Specialist 1st Class Jason McKnight · Public domain · Source
• A white fungal colony growing in a petri dish
  Zenyrgarden · CC BY-SA 4.0 · Source
• Water pouring into a glass, forming a stream and splashes
  Hasan Hagi · CC BY 3.0 · Source
• A close-up of stitched arthroscopic incisions on a knee
  Tim1965 · CC BY-SA 3.0 · Source
• A laboratory plate with a bacterial colony growing on agar
  HansN. · CC BY-SA 3.0 · Source
• A close view of red mosquito bites on a leg
  Renzoy16 · CC BY-SA 3.0 · Source
• Hikers walking a mountain path in mist
  Marco Antonio Ibarra Neri · CC BY-SA 4.0 · Source
• A person asleep in bed under a colorful blanket
  Panduh562 · CC BY-SA 3.0 · Source
• A close view of a person looking tired
  Psych 125 · CC BY-SA 3.0 · Source
• A computer screen showing an EEG trace, with an inset window of a sleeping person
  Jemaleddin Cole from Glen Burnie, USA · CC BY-SA 2.0 · Source
• A person smelling wine from a glass
  PattayaPatrol · CC BY-SA 4.0 · Source
• A person walking a path through a green forest
  Johan Neven from Borgloon-Gotem, Belgium · CC BY 2.0 · Source
• A close-up of wrinkled skin on the back of a hand
  Daderot · CC0 · Source
• A wide Roman stone vessel of the kind used for grinding and mixing food
  AgTigress · CC BY-SA 3.0 · Source
• Ancient ceramic jars and vessels, one of them still holding a residue
  CC0 · Source
• A dark rocky asteroid surface photographed close up by a spacecraft
  NASA Goddard Space Flight Center / Molly Wasser · Public domain · Source
• An ancient cave painting partly covered by calcite deposits
  JYB Devot · CC BY-SA 4.0 · Source
• A white hen nesting beside an egg in a wooden coop
  Pava · CC BY-SA 3.0 it · Source
• The Kaiko submersible being lifted on the deck of a research vessel
  nattou · Public domain · Source
• Animal figures painted on the wall of the Lascaux cave in France
  CC BY 4.0 · Source
• A diver swimming above a colorful coral reef with small fish around it
  Fakhrizal Setiawan · CC BY-SA 4.0 · Source
• Dry pasture in southern England during a drought
  Roger D Kidd · CC BY-SA 2.0 · Source
• A vaulted tunnel of an ancient Roman sewer system in Cologne
  Raimond Spekking · CC BY-SA 4.0 · Source
• Plains and rocks in Jezero crater, photographed by the Perseverance rover
  NASA/JPL-Caltech · Public domain · Source
• A dark lava flow beside the Krafla volcano in Iceland
  batintherain ( · CC BY-SA 2.0 · Source
• A burial chamber built from massive stones, seen from inside
  David Baird · CC BY-SA 2.0 · Source
• A Hubble photograph of Neptune and the blue clouds in its atmosphere
  NASA, ESA, and M.H. Wong and J. Tollefson (UC Berkeley) · Public domain · Source
• A composite image of the central region of the Milky Way at several wavelengths
  NASA/JPL-Caltech/ESA/CXC/STScI · Public domain · Source
• An artist impression of a dark, starless world with glowing bands of cloud across its face
  JPL · Public domain (NASA) · Source
• A glowing blue point of light on dark seawater at night
  Jicaraca · CC0 · Source
• A Hubble image of a dense star field toward the center of the Milky Way, with marked close-ups of white dwarfs
  Hubble Images: NASA, ESA, A. Calamida and K. Sahu (STScI), and the SWEEPS Science Team; Ground-based Image: A. Fujii · Public domain · Source
• The segmented primary mirror of the James Webb Space Telescope in the laboratory
  NASA/MSFC/David Higginbotham/Emmett Given · Public domain · Source
• A colony of giant tube worms in the deep sea
  NOAA Okeanos Explorer Program, Galapagos Rift Expedition 2011 · Public domain · Source
• The keypad and display of the Apollo guidance computer on museum display
  ArnoldReinhold · CC BY-SA 4.0 · Source
• The damaged Apollo 13 service module photographed in space
  NASA Johnson Space Center · Public domain · Source
• A satellite view of the lights of the North American east coast at night after the blackout
  Public domain · Source
• A wrecked Boston street after the 1919 molasses flood
  BPL · Public domain · Source
• An old telegraph machine on display beside a museum label
  Homoatrox · CC BY-SA 3.0 · Source
• The bright trail left by the Chelyabinsk meteor across the Russian sky
  Nikita Plekhanov · CC BY-SA 3.0 · Source
• Hausmanns bridge over the Akerselva stream in Oslo
  Fotoarkivet NTM · No restrictions · Source
• A woman listening to music through headphones under colored stage lighting
  Vu Hoang · CC BY 2.0 · Source
• A screenshot of the false ballistic missile emergency message sent to residents of Hawaii
  Apple Inc. · Public domain · Source
• A floating degassing pipe on Lake Nyos in Cameroon
  Photographer: Bill Evans, USGS · Public domain · Source
• Pedestrians standing in a fog-wrapped London street with the Parliament clock tower behind them
  Willem van de Poll · CC0 · Source
• An image of Jupiter with a dark mark in the atmosphere after a comet fragment impact
  geckzilla · CC BY 2.0 · Source
• A small fish-shaped robot being tested in a laboratory water tank
  Pablo Valdivia y Alvarado pablov@mit.edu · CC0 · Source
• A pink earthworm twisting through a clod of soil beside a brown beetle
  USDAgov · Public domain · Source
• An enormous ash column rising from Mount St Helens after the 1980 eruption
  Donald A. Swanson · Public domain · Source
• A fluorescently stained microscope image of a white blood cell and anthrax bacteria
  Volker Brinkmann · CC BY 2.5 · Source
• The Hunga Tonga eruption plume photographed from the International Space Station
  NASA / Kayla Barron · Public domain · Source
• A satellite view of forested terrain in Siberia around the Tunguska site
  NASA Earth Observatory image by Michala Garrison, using Landsat data from the U.S. Geological Survey. Story by Adam Voiland. · Public domain · Source
• An Amsterdam city street with trees, sidewalks and parked cars
  Fons Heijnsbroek · CC0 · Source
• A bee visiting a pink flower in a garden
  Kaleidea · CC BY-SA 4.0 · Source
• An archival black and white photograph of tsunami and fire damage at Seward harbor, Alaska
  The U.S. National Archives · No restrictions · Source
• A portrait of the researcher Jonathan Shanklin, one of the scientists behind the Antarctic ozone discovery
  François Guerraz · CC BY-SA 3.0 · Source
• Silhouettes of ants on an anthill against the light of sunset
  Arifagazal · CC BY-SA 4.0 · Source
• A long-winged bat flying low over water and drinking in flight
  Moshiur Rahman Happy · CC BY 4.0 · Source
• A dense colony of chinstrap penguins on a rocky shore
  David Stanley from Nanaimo, Canada · CC BY 2.0 · Source
• A close-up of the head of a black carrion crow
  Alexis Lours · CC BY 4.0 · Source
• A small house mouse standing on sandy ground
  kcthetc1 · CC0 · Source
• A colorful Spanish hogfish swimming over a coral reef
  James St. John · CC BY 2.0 · Source
• A small hoverfly landing on a yellow flower
  Jules Verne Times Two · CC BY-SA 4.0 · Source
• A wide view of Lituya Bay in Alaska, ringed by mountains and glaciers
  NOAA Photo Library at Flickr · Public domain · Source
• A modern wooden fence cut and offset where the San Andreas fault crosses the ground
  Toniher · CC BY-SA 3.0 · Source
• Two male Namaqua sandgrouse standing beside a desert pool
  Bernard DUPONT from FRANCE · CC BY-SA 2.0 · Source
• A great frigatebird soaring against the sky with its wings fully spread
  Matt MacGillivray from Toronto, Canada · CC BY 2.0 · Source
• Yellow fruiting bodies of Physarum polycephalum on a natural substrate
  frankenstoen · CC BY 2.5 · Source
• Water droplets caught along the threads of a spider web
  Luc Viatour · CC BY-SA 3.0 · Source
• A pale cylindrical sea sponge dotted with dark openings on a sandy seabed
  Diego Delso · CC BY-SA 4.0 · Source
• The white fireball of the Starfish Prime nuclear test above the Pacific
  US Department of Defense · CC BY-SA 4.0 · Source
• A striped surgeonfish swimming over a tropical reef
  Toby Hudson · CC BY-SA 3.0 · Source
• A historic photograph of a wrecked ship in Texas City harbor after the explosion
  Public domain · Source
• A fragment of a Dead Sea Scroll with ancient Hebrew writing on parchment
  Osama Shukir Muhammed Amin FRCP(Glasg) · CC BY-SA 4.0 · Source
• A three-dimensional model of a DNA double helix
  Ude · Public domain · Source
• A map of the Earth at night with the lights of cities
  NASA Earth Observatory · Public domain · Source
• A group of African elephants walking across a wide green grassland
  Cosal · CC BY-SA 4.0 · Source
• A map of irregular regions colored with four colors so no neighbors match
  Smithsonian Museum of American History · Public domain · Source
• A stone pillar carved with an animal in relief at Gobekli Tepe, surrounded by low stone walls
  Teomancimit · CC BY-SA 3.0 · Source
• A navigation satellite with its solar panels extended
  U.S. Air Force · Public domain · Source
• A father and daughter reading a book together in bed before sleep
  Ldorfman · CC BY-SA 3.0 · Source
• A colored electron microscope image of a human T cell
  NIAID · CC BY 2.0 · Source
• A purple-stained histological section of brain tissue with an amyloid plaque at its centre
  Mikael Häggström, M.D. Author info - Reusing images- Conflicts of interest: None Mikael Häggström, M.D.Consent note: Consent from the patient or patient's relatives is regarded as redundant, because of absence of identifiable features (List of HIPAA identifiers) in the media and case information (See also HIPAA case reports guidance). · CC0 · Source
• A mother holding a toddler in a carrier under an umbrella
  NPS photo · Public domain · Source
• A plate of fermented cucumbers in the style of kimchi
  jeffreyw · CC BY 2.0 · Source
• An open thank-you card and a fountain pen on a wooden table
  Magnolia677 · CC BY 4.0 · Source
• Stacks of copper and silver coins on a white surface
  Dori · CC0 · Source
• A meal of shrimp, bread, onion and asparagus on a grill
  MIKI Yoshihito from Sapporo City,Hokkaido., JAPAN · CC BY 2.0 · Source
• Two hikers with backpacks and walking poles in a forest
  U.S. Forest Service- Pacific Northwest Region · Public domain · Source
• A blood sample tube standing in a clear laboratory rack
  Dotodot · CC BY-SA 4.0 · Source
• Smiling parents holding their newborn baby in a hospital
  U.S. Navy photo · Public domain · Source
• A couple walking outdoors holding hands
  Alice Donovan Rouse (@alicekat) · CC0 · Source
• A couple talking beside a large wooden door
  Stefan Krasowski from New York, NY, USA · CC BY 2.0 · Source
• A continuous glucose monitoring sensor stuck to the skin
  Geo Swan from Toronto, Canada · CC0 · Source
• A scientist working with glassware in a medical laboratory
  National Eye Institute · CC BY 2.0 · Source
• Pink pigs standing in an open farmyard
  kallerna · CC BY-SA 4.0 · Source
• A mother steadying a child learning to ride a bicycle
  Alextredz · CC BY-SA 4.0 · Source
• A glass salt shaker standing on a pale table
  NeoMeesje · CC BY-SA 4.0 · Source
• Two small children sitting in a living room watching television
  Julian Tysoe · CC BY 2.0 · Source
• A caregiver and a young girl reading a book together in a playroom
  Shixart1985 · CC BY 2.0 · Source
• A fluorescently stained pancreatic islet, red cells surrounded by blue tissue
  Jakob Suckale · CC BY-SA 3.0 · Source
• A breakfast plate with fish, lemon and herbs
  flowcomm · CC BY 2.0 · Source
• Chocolate-coated pastry snacks arranged in rows
  David Adam Kess · CC BY-SA 4.0 · Source
• A side section of a human brain in an MRI scan
  NIH Image Gallery from Bethesda, Maryland, USA · Public domain · Source
• A couple sitting close together and talking beside a stone wall
  Pedro Ribeiro Simões from Lisboa, Portugal · CC BY 2.0 · Source
• Two women cooking together in a pot over a fire
  Gwasheya · CC0 · Source
• A whole avocado and a halved avocado against a white background
  Ivar Leidus · CC BY-SA 4.0 · Source
• A plate of fish, potato, mushrooms and fresh salad
  ProjectManhattan · CC BY-SA 3.0 · Source
• A plate of chicken, rice and chopped vegetable salad
  E4024 · CC BY-SA 4.0 · Source
• A couple sitting and talking to each other beside the water
  Pedro Ribeiro Simões from Lisboa, Portugal · CC BY 2.0 · Source
• A baby asleep on a white blanket
  Stephanie Pratt · CC0 · Source
• A preterm baby held skin to skin against a parent’s chest
  Happi Raphael · CC BY-SA 4.0 · Source
• Half a green kiwifruit with a bite taken out of it
  darwin Bell from San Francisco, USA · CC BY 2.0 · Source
• A disassembled medical syringe against a white background
  CC BY-SA 4.0 · Source
• An alert baby held close to its mother, looking ahead
  Geoff Charles · CC BY-SA 4.0 · Source
• A couple embracing while lying at the water’s edge
  Marc St. Gil · Public domain · Source
• Piles of fresh beans and legumes at a market stall
  E4024 · CC BY-SA 4.0 · Source
• A mother watching a toddler beside a community vegetable bed
  Pacific Southwest Region 5 · Public domain · Source
• A woman measuring her blood pressure with a digital monitor
  Shixart1985 · CC BY 2.0 · Source
• A woman looking at a laughing man whose head rests in her lap
  Peter Drier · CC BY 2.0 · Source
• A couple resting together on a blanket outside a house
  epSos.de · CC BY 2.0 · Source
• A girl eating cauliflower and other vegetables at a table
  vastateparksstaff · CC BY 2.0 · Source
• Whole and shelled walnuts on a grey background
  Ivar Leidus · CC BY-SA 4.0 · Source
• Yellow hexagonal honeycomb cells with a single bee on them
  Matthew T Rader · CC BY-SA 4.0 · Source
• An aerial view of an Antarctic ice shelf, white tongues of ice in a dark sea
  Public domain · Source
• One hand pouring red wine from a bottle into a glass held by another hand
  Fabio Ingrosso · CC BY 2.0 · Source
• The small feet of a newborn baby against a blurred blue background
  Janko Ferlič thepootphotographer · CC0 · Source
• A colony of fruit bats hanging upside down from a pale cave ceiling
  Natasha Haggard · CC BY 4.0 · Source
• Four empty glass bottles in brown, green and blue standing in a row casting colored shadows
  George Chernilevsky · Public domain · Source
• A lecture hall with blackboards covered in formulas, a lecturer at the front and students in rows
  Tungsten · Public domain · Source
• Pink pigs lying pressed together in a dirt yard beneath a shelter
  京浜にけ at Japanese Wikipedia · CC BY-SA 3.0 · Source
• Vanilla ice cream with cherry jam in a glass bowl on a blue and white checked cloth
  JIP · CC BY-SA 4.0 · Source
• A page from an old handwritten notebook with inked circles drawn beside lines of script
  University of Edinburgh Heritage Collections · CC BY 3.0 · Source
• An adult bonobo holding an infant close to its face on a grassy surface
  LaggedOnUser · CC BY-SA 2.0 · Source
• A seventeenth-century handwritten legal document with dense lines and signatures
  Unknown authorUnknown author or not provided · Public domain · Source
• A male rainbow agama lizard with an orange-red head and dark blue body on a rock
  Sergio Boscaino from Busseto, Italy · CC BY 2.0 · Source
• A three-dimensional CT reconstruction of the lower back vertebrae and sacrum against black
  Goleisureintl · CC BY 4.0 · Source
• Two white dice in the air above a green surface, blurred with motion
  Daniel Dionne · CC BY-SA 2.0 · Source
• Colorful peppers, large and small, in green, red, yellow and orange against white
  Nikodem Nijaki · CC BY-SA 3.0 · Source
• An old Soviet birth certificate form in yellowish tones with headings in Russian and Belarusian
  Rakoon · Public domain · Source
• A white bathroom stall with a toilet, paper holder and hexagonal tiled floor
  MarkBuckawicki · CC0 · Source
• A rainbow trout swimming above a stony streambed in clear water
  Liquid Art · CC BY-SA 4.0 · Source
• A thin, curling brown-orange aquatic worm under a microscope against a white background
  SGSURAJIT647 · CC BY-SA 4.0 · Source
• Shelves of large glass jars filled with colorful candy in a sweet shop
  HelenOnline · CC BY-SA 3.0 · Source
• A funnel-shaped stainless steel urinal in a public stall with metal walls
  Eric Fischer · CC BY 2.0 · Source
• The International Space Station against the black of space
  NASA · Public domain · Source
• A transparent jellyfish lit against dark water
  Carl Kho · CC BY-SA 4.0 · Source
• A nineteenth-century oil portrait of Edward Jenner in dark dress
  CC BY 4.0 · Source
• Orange clouds of gas and dust with bright stars in a nebula
  Image: National Aeronautics and Space Administration (a U.S. federal government agency; ) European space agency ( ), Canadian Space Agency ( ) Space Telescope Science Institute ( , science operations center for the Hubble Space Telescope ) · Public domain · Source
• A row of lava lamps in different colors
  Dean Hochman from Overland Park, Kansas, U.S. · CC BY 2.0 · Source
• Fine microplastic particles in assorted colors, close up
  Gabriele85 · CC0 · Source
• A full Moon in close-up, showing craters and dark basalt plains
  Gregory H. Revera · CC BY-SA 3.0 · Source
• Fine white mycelium threads spreading between dry leaves on a forest floor
  PerytonMango · CC BY-SA 4.0 · Source
• A cut nautilus shell showing its spiral chambers
  Philippe Alès · CC BY-SA 4.0 · Source
• An octopus among rocks with its arms spread and suckers showing
  H. Zell · CC BY-SA 3.0 · Source
• A sea otter floating on its back in the water
  Mike Baird from Morro Bay, USA ( bairdphotos.com ) · CC BY 2.0 · Source
• A realistic facial reconstruction of Ötzi the Iceman
  Mannivu · CC BY-SA 4.0 · Source
• A satellite map of ozone concentration over the southern hemisphere
  European Union, Copernicus Atmosphere Monitoring Service Data · Attribution · Source
• A group of young penguins pressed together
  Jose Lopez, Jr. · Public domain · Source
• Mould colonies in different colors on a growth medium in a Petri dish
  Andrei Trigubovich · CC BY-SA 4.0 · Source
• A block of frozen ground breaking away into the water along a crumbling Arctic shore
  Benjamin Jones/USGS · Public domain · Source
• A white bowl filled with pills and capsules in different colors
  ParentingPatch · CC BY-SA 3.0 · Source
• A plaster cast of a Pompeii victim sitting hunched forward
  Kleuske · CC BY 3.0 · Source
• An Ulam spiral: thousands of blue dots forming diagonals on white
  Marianoju · CC BY-SA 4.0 · Source
• A black and white QR code printed on paper
  Donald Trung Quoc Don (Chữ Hán: 徵國單) - Wikimedia Commons . ( Want to use this image? ) · CC BY-SA 4.0 · Source
• The blue glow of Cherenkov radiation around a research reactor core in a pool of water
  Oak Ridge National Laboratory · CC BY 2.0 · Source
• The trunks of tall redwoods in a forest
  daryl_mitchell from Saskatoon, Saskatchewan, Canada · CC BY-SA 2.0 · Source
• A close-up of an impact crater in a space shuttle window from mission STS-7, with a millimetre scale marker
  NASA · Public domain · Source
• A glacier front meeting the sea
  Giles Laurent · CC BY-SA 4.0 · Source
• A view through a stone arch into the amphitheatre square in Lucca, with pale houses, cafes and umbrellas
  Holger Uwe Schmitt · CC BY-SA 4.0 · Source
• A close-up of carved wooden planks and ornament on the Oseberg ship in a museum; the silk fragments are not in the picture
  Daderot · Public domain · Source
• The Via Appia in Rome: ancient stone paving between trees and a stone wall
  Palickap · CC BY-SA 4.0 · Source
• Outlines of hands in pale, red and dark tones on a rock wall at the Cave of the Hands in Argentina
  Maxima20 · CC BY-SA 3.0 · Source
• The ship Endurance among ice floes in 1915, in a historic photograph by Frank Hurley
  Frank Hurley · Public domain · Source
• Tall kelp fronds rising through sunlit water
  Peter Southwood · CC BY-SA 3.0 · Source
• A long slender ancient trumpet of silver
  Suaudeau · CC BY-SA 4.0 · Source
• An empty football pitch with the center circle in view
  Wutthichai Charoenburi from Bangkok · CC BY 2.0 · Source
• A bumblebee collecting nectar from a flower
  Toni~hrwiki · CC BY-SA 4.0 · Source
• A precision laboratory apparatus with a suspended plate and fine adjustment screws
  notnef from Canberra, Australia · CC BY 2.0 · Source
• The blue glow of a reactor core seen through water
  No individuals credited, LANL brochure for Omega West Reactor · Attribution · Source
• Two pilots working together in a modern cockpit
  John Christian Fjellestad: flickr · CC BY 4.0 · Source
• An ancient Egyptian toe prosthesis displayed in a museum
  CaptMondo · CC BY 2.5 · Source
• Two African elephants bathing together in water
  Bernard Gagnon · CC BY-SA 4.0 · Source
• An adult African elephant standing in open grassland
  Charles J. Sharp · CC BY-SA 4.0 · Source
• The remains of the Roman amphitheatre at Ephesus
  Benh LIEU SONG from Torcy, France · CC BY-SA 2.0 · Source
• A hammerhead shark swimming above the sea floor
  Eric Kilby from Somerville, MA, USA · CC BY-SA 2.0 · Source
• Stained human HeLa cells seen under a fluorescence microscope
  8x57is · CC BY-SA 4.0 · Source
• An observatory and scientific buildings on the summit of Mount Washington
  Famartin · CC BY-SA 4.0 · Source
• A naloxone syringe and its packaging against a white background
  Intropin (Mark Oniffrey) · CC BY-SA 4.0 · Source
• Prion proteins stained red inside mouse nerve cells
  NIH Image Gallery from Bethesda, Maryland, USA · Public domain · Source
• Red blood cells and one sickle-shaped cell under the microscope
  Osaretin · CC BY-SA 4.0 · Source
• A snooker table set up with the reds racked and the colors on their spots
  barfisch · CC BY-SA 3.0 · Source
• Liquid helium creeping over the rim of a small container
  Alkamid · CC BY-SA 3.0 · Source
• A group of people marching together in uniform step
  NATO Training Mission-Afghanistan · CC BY-SA 2.0 · Source
• Participants in a traditional Thaipusam procession
  *angys* · CC BY-SA 4.0 · Source
• Cell colonies growing in a laboratory dish under a microscope
  NIH Image Gallery from Bethesda, Maryland, USA · Public domain · Source
• The Rosetta Stone, three kinds of script carved into a dark slab
  Unknown author Unknown author · Public domain · Source
• Saturn and its rings photographed by the Cassini spacecraft
  NASA/JPL/Space Science Institute · Public domain · Source
• An empty office room with large windows and blue carpet
  Np6824 · CC BY-SA 4.0 · Source
• A charred ancient loaf of bread displayed in a museum
  Schuppi · CC BY-SA 4.0 · Source
• A black lump of birch pitch resting on a piece of wood
  Jorre · CC BY-SA 3.0 · Source
• A cluster of small LEDs emitting intense blue light
  oomlout · CC BY-SA 2.0 · Source
• A coffee cup on a saucer with a spoon and a biscuit
  Peachyeung316 · CC BY-SA 4.0 · Source
• A sewing needle and thread among pins
  Anderson Mancini from Sao Paulo, Brazil · CC BY 2.0 · Source
• Colorful bowls heaped with chili peppers at a market
  Wilfredor · CC BY-SA 4.0 · Source
• A hand of cards spread out on a table
  Countakeshi · CC BY-SA 4.0 · Source
• A small cleaner fish beside a large fish on a reef
  Alexander Vasenin · CC BY-SA 3.0 · Source
• A black New Caledonian crow holding food on a branch
  MD sajjad hossain photography · CC BY-SA 4.0 · Source
• A road sign to Denisova Cave in Siberia
  Yuriy59 · CC BY-SA 3.0 · Source
• The Canyon Diablo meteorite displayed on a dark stand in a museum
  David Shane · CC BY 2.0 · Source
• A satellite view of green vegetation spreading across a continental landmass
  NASA · Public domain · Source
• An aerial view of the long arms of a LIGO detector in the desert
  LIGO Laboratory · Public domain · Source
• The gold-wrapped Kepler spacecraft during launch preparations
  NASA/JPL/Ball Aerospace &amp; Technologies Corp · Public domain · Source
• An open weather station in a field under a bright sky
  Famartin · CC BY-SA 3.0 · Source
• Marathon runners moving together along a city street beside a crowd
  Robert Lamb · CC BY-SA 2.0 · Source
• A heap of ropes and plastic waste gathered beside a container at a harbour
  USFWS Pacific · Public domain · Source
• Green mint leaves in close-up
  Commonists · CC BY-SA 4.0 · Source
• Researchers beside an atomic clock apparatus in a laboratory
  National Institute of Standards and Technology - Physics Laboratory: Time and Frequency Division · Public domain · Source
• A glass flask with a swan neck and dark liquid in a museum display
  Motokoka · CC BY-SA 4.0 · Source
• An open sports pitch with grass and small goals
  Huangdan2060 · CC0 · Source
• Prayer beads and crosses hanging against a light background
  Sean MacEntee from Monaghan, Ireland · CC BY 2.0 · Source
• An old framed letter with a red seal at the bottom
  Achim Hering · CC BY 3.0 · Source
• A handwritten ledger from 1852, filled with columns of sums
  Kron, F. J. (Francis Joseph), 1798-1883 · Public domain · Source
• A surveillance camera on a tall pole against an evening sky
  Hans Wolff · Public domain · Source
• A runner stopped at the side of a track, gripping a cramping calf
  City of Boston Archives from West Roxbury, United States · CC BY 2.0 · Source
• A close-up of a child’s hands on piano keys
  zaui/Scott Catron · CC BY-SA 2.0 · Source
• Two ancient vessels in Egyptian blue displayed on a museum shelf
  SpeakingArch · CC BY-SA 4.0 · Source
• The marble statue of Augustus of Prima Porta, standing with the right arm raised
  Justin Benttinen · CC BY-SA 4.0 · Source
• Two women sitting across a glass table from each other in an interview
  amtec_photos · CC BY-SA 2.0 · Source
• The ruins of Beaulieu Abbey in England, a row of stone arches around a lawn
  David Merrett · CC BY 2.0 · Source
• The three pyramids at Giza against a blue sky, with a road crossing the sand
  Nina R from Africa · CC BY 2.0 · Source
• A young robin standing on a stone surface with green leaves beside it
  Charles J. Sharp · CC BY-SA 4.0 · Source
• Yellow slime mold branching across a petri dish against a black background
  Tim Tim (VD fr) · CC BY-SA 4.0 · Source
• Close view of a black crow’s head against a blurred background
  Alexis Lours · CC BY 4.0 · Source
• An open Venus flytrap in vivid red, with sensing hairs standing out from the margins
  Noah Elhardt · CC BY-SA 2.5 · Source
• A pink hairless naked mole rat standing on a clay surface, its thin tail curling back
  Roman Klementschitz, Wien · CC BY-SA 3.0 · Source
• The full moon above the curve of the Earth’s atmosphere, photographed from space
  NASA · Public domain · Source
• A whole onion, a halved onion and cut rings on a wooden board
  Donovan Govan. · CC BY-SA 3.0 · Source
• A dense grove of twisting trees in daylight, India
  2140556SamajaMadhavan · CC BY-SA 4.0 · Source
• A brown wood frog sitting on dry leaf litter
  USFWS Mountain-Prairie · Public domain · Source
• An astronaut in a white suit working on a space station structure against black space
  NASA · Public domain · Source
• A single orange die with black pips on a light background
  CC BY-SA 3.0 · Source
• A tiny vial of luminous paint made by the United States Radium Corporation, labeled POISON
  TheBeSphereOfCourse · CC BY-SA 4.0 · Source
• A penalty taker standing over the ball in front of a full stadium
  Public domain · Source
• Cones of colored powder pigment in metal bowls at a market in India
  Kenneth Lu from San Francisco, CA · CC BY 2.0 · Source
• A reconstruction of the Piltdown skull, dark fragments set into pale plaster
  CC BY 4.0 · Source
• A huge cross-section of a sequoia trunk showing annual rings, displayed in a museum
  Elwood P. Dowd · CC BY-SA 4.0 · Source
• An old book in Greek script open in a museum display, with thick parchment leaves
  George E. Koronaios · CC BY-SA 4.0 · Source
• Dense city traffic seen from above at a junction
  Nevermind2 · CC BY-SA 3.0 · Source
• A still crater lake surrounded by steep green hillsides
  Julielangford · CC BY-SA 3.0 · Source
• A peacock mantis shrimp in red and green on a coral reef
  Alexander Vasenin · CC BY-SA 3.0 · Source
• A white sea slug with green bands along its folds, resting on algae on the seabed
  Parent Géry · CC0 · Source
• A black lump of uranium ore with a bubbled surface on a pale background
  Weirdmeister · CC BY-SA 4.0 · Source
• A dead ant gripping a mossy twig with a fungal stalk growing from its head
  Bealeiderman · CC BY-SA 4.0 · Source
• A swarm of bees hanging as a dense cluster from a maple branch
  T.Voekler · CC BY-SA 3.0 · Source
• A vivid rust-colored stream pouring from a white glacier wall in Antarctica
  National Science Foundation/Peter Rejcek · Public domain · Source
• Lake Toba in Sumatra, the eruption caldera, with a town on the shore and a boat on the water
  Christian Advs Sltg · CC BY-SA 3.0 · Source
• A mine tunnel cut through rock, lit by cold lighting
  Александр Байдуков · CC BY-SA 4.0 · Source
• A gray Greenland shark swimming in dark water, close on the head
  Hemming1952 · CC BY-SA 4.0 · Source
• A pale elongated hagfish on a rocky bottom, photographed underwater
  Peter Southwood · CC BY-SA 3.0 · Source
• A brown and grey cockroach on a green leaf, in close-up
  Peterwchen · CC BY-SA 4.0 · Source
• A single point of blue light glowing in a flask of liquid
  Beazzie · CC BY-SA 4.0 · Source
• A white cane folded into three sections on a black background beside a second cane with a black handle
  Sarah Chester · CC BY 3.0 · Source
• A close-up of two stalked mantis shrimp eyes, pink and banded, against a black background
  Cédric Peneau · CC BY-SA 4.0 · Source
• A bundle of green asparagus standing in a metal pot of boiling water
  W.carter · CC0 · Source
• A blue road sign at the Scottish border carrying a greeting in English and Gaelic
  DeFacto · CC BY-SA 4.0 · Source
• A single candle flame burning inside a glass vessel against complete darkness
  Akkbula · CC BY-SA 4.0 · Source
• A white dome security camera mounted on a pale stone wall
  Myotus · CC BY-SA 4.0 · Source
• A brown and gray tabby cat looking at the camera with yellow eyes
  Kızıl · CC BY-SA 4.0 · Source
• A close-up of a black and white cat's face with large eyes and a pink nose
  IsCat · CC BY-SA 4.0 · Source
• A surgical team in green gowns and masks standing around an operating table
  Almondbite3 · CC BY-SA 4.0 · Source
• A brown and black dog sitting in tall grass beside a line of trees
  Jorge Franganillo from Barcelona, Spain · CC BY 2.0 · Source
• A young chimpanzee sitting on dry forest ground and putting food into its mouth
  Garst, Warren, 1922-2016, photographer · CC BY-SA 4.0 · Source
• A white cup of black coffee with a spoon on a saucer against a dark background
  Julius Schorzman · CC BY-SA 2.0 · Source
• A black crow standing on a branch holding a short brown stick in its beak
  MD sajjad hossain photography · CC BY-SA 4.0 · Source
• A high arid plain on the Tibetan plateau with snow-covered ridges on the horizon
  Jan Kranendonk ( · CC BY-SA 4.0 · Source
• A brown dog lying on a red floor, raising its gaze toward the camera
  epSos.de · CC BY 2.0 · Source
• A white plate piled with chocolate chip cookies on a pale surface
  The-Wuje · CC BY-SA 4.0 · Source
• A close view of a woman laughing with her mouth open against a blurred room
  Basile Morin · CC BY-SA 4.0 · Source
• An empty classroom with rows of wooden chairs and a dark board at the front
  Tomwsulcer · CC0 · Source
• An empty park bench on a path at dusk facing bare ground
  Scott Van Daalen scottvd · CC0 · Source
• An ice tray and water bottles inside a freezer compartment
  Philsacor · CC0 · Source
• A lone walker on a narrow dirt path in a misty green forest
  Kaitha Poo Manam · CC BY-SA 4.0 · Source
• A close-up of a pink octopus arm showing a row of round pale suckers
  Betty Wills (Atsme) · CC BY-SA 4.0 · Source
• A grey city pigeon with an iridescent purple neck standing on gravel
  Muhammad Mahdi Karim Facebook The making of this document was supported by Wikimedia CH. (Submit your project!) For all the files concerned, please see the category Supported by Wikimedia CH. العربية ∙ বাংলা ∙ čeština ∙ Deutsch ∙ English ∙ Esperanto ∙ español ∙ français ∙ galego ∙ हिन्दी ∙ magyar ∙ italiano ∙ 日本語 ∙ македонски ∙ Nederlands ∙ português do Brasil ∙ rumantsch ∙ русский ∙ sicilianu ∙ slovenščina ∙ தமிழ் ∙ українська ∙ 中文 ∙ +/− · GFDL 1.2 · Source
• A made bed in a bright bedroom with pink curtains and an open door
  Afifa Afrin · CC BY-SA 3.0 · Source
• Rows of tomato plants tied to wooden stakes inside a greenhouse
  Shixart1985 · CC BY 2.0 · Source
• A brown rat approaching a clear food container on dry ground beside a wire fence
  Chuck Homler d/b/a Focus On Wildlife · CC BY-SA 4.0 · Source
• A runner in an orange shirt on a narrow dirt trail between green shrubs
  ValeryGL · CC BY-SA 4.0 · Source
• Two open palms with fingers spread against a black background
  Eyefive45 · CC BY-SA 4.0 · Source
• A porter walking through mountain mist with a bundle of long timber beams on his back
  Original uploader was Chagai at en.wikipedia · CC BY-SA 3.0 · Source
• Four PET brain scans in heat-map colors, red at the center and blue at the edges
  Klunkwe · CC BY-SA 3.0 · Source
• A view from above into a glass jar of bubbling white sourdough starter
  PilotChicago · CC BY-SA 4.0 · Source
• Three athletes stretching on a grass field under a blue sky
  Sgt. Fareeza Ali · Public domain · Source
• The vast caldera of Mount Tambora photographed from above, ringed by greenish slopes
  This image was taken by the NASA Expedition 20 crew. · Public domain · Source
• A hospital emergency department entrance with an ambulance parked beside it
  Rwendland · CC BY-SA 3.0 · Source
• A 17th-century painting of a white tulip with red stripes on a green stem
  Unknown artistUnknown artist · Public domain · Source
• An electron microscope image of curved, elongated bacteria with flagella
  Public domain · Source
• A pile of large pale orange vitamin tablets on a light blue surface
  Mx. Granger · CC0 · Source
• A tall white spout rising from the back of a blue whale on a gray sea
  AWeith · CC BY-SA 4.0 · Source
• A plane tiled with the hat shape, the same shape at different rotations in blue and grey tones
  David Smith, Joseph Samuel Myers, Craig S. Kaplan, and Chaim Goodman-Strauss · CC BY 4.0 · Source
• Monks Mound at Cahokia, a broad grass-covered earthen hill with a stairway climbing its front
  Skubasteve834 · CC BY 4.0 · Source
• A museum replica of the horse panel from Chauvet cave, with horse and aurochs heads drawn in charcoal on rock
  HTO · Public domain · Source
• A world map colored in only four colors, red, green, yellow and pale blue, with no two neighbors alike
  Adam Iragaël · CC BY-SA 4.0 · Source
• An aerial photograph of Great Zimbabwe, the great elliptical wall and the remains of stone structures around it in a dry landscape
  Janice Bell · CC BY-SA 4.0 · Source
• The Shigir wooden sculpture standing in a tall glass case in a museum hall, with visitors beside it
  Леонид Макаров · CC0 · Source
• A copy of the Shroud of Turin hanging on a red curtain above an altar, with branches of thorns laid before it
  TravelingOtter · CC BY 2.0 · Source
• An oxhide-shaped copper ingot from the Uluburun ship, rough and greenish, on a display mount
  Zunkir · CC BY-SA 4.0 · Source
• The carved stern of the warship Vasa in the museum, crowded with wooden sculptures, lions and a royal crown
  Jules Verne Times Two · CC BY-SA 4.0 · Source
• An ancient Egyptian papyrus scroll covered in hieroglyphic script
  Warner, Charles Dudley, 1829-1900; Mabie, Hamilton Wright, 1 · No restrictions · Source
• An aerial photograph of the Amazon rainforest with a winding river
  lubasi · CC BY-SA 2.0 · Source
• A price label on a product in a shop
  Banku · CC BY-SA 4.0 · Source
• The temple of Angkor Wat reflected in water
  Jakub Hałun · CC BY-SA 4.0 · Source
• A modern, fully equipped operating room
  Dr.jayesh amin · CC BY-SA 3.0 · Source
• A wall calendar with dates marked
  Joe deSousa · CC0 · Source
• A close view of a human eye with a brown iris
  Stefan Schroeder · CC BY-SA 3.0 · Source
• An ancient Viking runestone from Denmark
  Szilas · CC0 · Source
• A bombardier beetle in close-up on a wooden surface
  gailhampshire from Cradley, Malvern, U.K · CC BY 2.0 · Source
• The sun rising above a layer of cloud
  Sri chakra pranav · CC BY-SA 4.0 · Source
• A page from a 1947 logbook with a real moth taped to it
  Courtesy of the Naval Surface Warfare Center, Dahlgren, VA., · Public domain · Source
• A colorful coral reef with fish swimming above it
  Jim E Maragos, U.S. Fish and Wildlife Service · Public domain · Source
• A green door at the entrance to a building in Rome
  Dietmar Rabich · CC BY-SA 4.0 · Source
• Students leaving an examination hall
  고려 · CC BY 4.0 · Source
• An electric eel swimming in an aquarium
  shankar s. from Dubai, united arab emirates · CC BY 2.0 · Source
• A monument to Fermat with his famous equation carved on it
  Klaus Barner · CC BY-SA 3.0 · Source
• An investigator examining fingerprints under blue light
  US Air Force · Public domain · Source
• A close view of microplastic fragments scattered among gravel
  François Galgani · CC BY 4.0 · Source
• An apartment building in a residential New York neighborhood
  Deans Charbal · CC BY-SA 4.0 · Source
• A physicist writing equations on a blackboard
  Smithsonian Institution · Public domain · Source
• A deep field of thousands of galaxies and stars
  ESO · CC BY 4.0 · Source
• A reconstruction of a wooden printing press of Gutenberg’s era
  International Printing Museum · CC0 · Source
• A flock of pigeons in flight against a blue sky
  Spanishguitar101 · CC BY-SA 4.0 · Source
• A lost wallet lying in the street
  Martin Cooper · CC BY 2.0 · Source
• The terraces and peaks of Machu Picchu seen from above
  Peter van der Sluijs · CC BY-SA 3.0 · Source
• A wall of tiles in a repeating pattern
  Wikipedia Loves Art participant "VeronikaB" · CC BY 2.5 · Source
• An old reel-to-reel tape recorder from the 1960s
  Joe Haupt · CC BY 2.0 · Source
• A mimic octopus with a distinctive striped pattern on the sand
  Rickard Zerpe · CC BY-SA 2.0 · Source
• A closed green wooden door at the entrance to a building
  Dietmar Rabich · CC BY-SA 4.0 · Source
• A circuit board crowded with very small components
  Phiarc · CC BY-SA 4.0 · Source
• A huge bird-shaped ground drawing in the Nasca desert
  Diego Delso · CC BY-SA 4.0 · Source
• A diagram comparing the size of a neutron star with the Grand Canyon
  Credit: X-ray: NASA/CXC/Southampton/W. Ho et al.; Illustrati · Public domain · Source
• The Pale Blue Dot image, Earth as a tiny speck inside a beam of light
  NASA/JPL-Caltech · Public domain · Source
• A colorful anatomical illustration of a human chest and abdomen
  Lyman, Henry M. (Henry Munson), 1835-1904; Yaggy, L. W. (Lev · Public domain · Source
• The first X-ray photograph of a hand, with a ring visible on one finger
  Wilhelm Röntgen · Public domain · Source
• A woman washing her hands at an outdoor washing station
  Wabyona Bingi · CC BY-SA 4.0 · Source
• Colored pencils lined up side by side
  Chevre · CC BY-SA 3.0 · Source
• A classic black London taxi on a street
  Diliff · CC BY 2.5 · Source
• The gold funerary mask of Tutankhamun
  Thomas Clouet · CC BY-SA 4.0 · Source
• A specialist cable-laying ship at work on the open ocean
  Nc tech3 · CC BY-SA 4.0 · Source
• A dense city skyline at dusk
  Sergei Gussev · CC BY 4.0 · Source
• The planet Venus covered in white cloud
  NASA/JPL-Caltech · Public domain · Source
• A page from the mysterious Voynich manuscript in undeciphered script
  Unknown authorUnknown author · Public domain · Source
• A dog yawning outdoors on a sunny day
  Neslihan_Turan · CC BY-SA 3.0 · Source
• Archers shooting arrows toward a target
  The Dean of Physics · CC BY-SA 4.0 · Source
• A painted portrait of Ada Lovelace
  Alfred Edward Chalon · Public domain · Source
• An anatomical engraving of the abdominal cavity from 1822
  Internet Archive Book Images · No restrictions · Source
• A historical commemorative plaque dedicated to the ARPANET
  AdamAKR5 · CC BY-SA 4.0 · Source
• A beaver dam of branches over frozen water
  User:IlyaHaykinson · CC BY-SA 1.0 · Source
• An anatomical rendering of a skeleton with the thigh bones highlighted
  Anatomography · CC BY-SA 2.1 jp · Source
• A layer of white cloud photographed from high above
  Keith Pomakis · CC BY-SA 2.5 · Source
• The horn antenna at Holmdel where the background radiation was found
  NASA, restored by Bammesk · Public domain · Source
• A rugged coastline of cliffs and inlets in Japan
  Carlquist, Sherwin John, 1930-2021 · CC BY 4.0 · Source
• Two guests holding drinks at a social gathering
  Bill Kuykendall · Public domain · Source
• An old mechanical calculating machine with digit wheels
  CEphoto, Uwe Aranas · CC BY-SA 3.0 · Source
• A portrait of Marie Curie from the 1920s
  Henri Manuel · Public domain · Source
• A dodo skeleton in a museum display case
  Heinz-Josef Lücking · CC BY-SA 2.5 · Source
• An X-ray diffraction pattern on a photographic plate
  Internet Archive Book Images · No restrictions · Source
• A close-up of the skin of an arm with goosebumps and raised hairs
  Pilettes · CC BY-SA 3.0 · Source
• The planet Jupiter with the Great Red Spot
  NASA/JPL-Caltech/SwRI/MSSS/Kevin M. Gill · Public domain (NASA) · Source
• A carbonized papyrus fragment from Herculaneum in a display mount
  unknown, held at British Library · Public domain · Source
• An old folding Kodak camera in black and white
  Dustininala · CC BY-SA 4.0 · Source
• A lift bridge over the Pregolya river in Kaliningrad
  Valdis Pilskalns · CC BY 3.0 · Source
• A painted wall showing a bull in the Lascaux cave replica
  HTO · Public domain · Source
• A model of a human brain split into its two hemispheres
  Edeh Sophia · CC0 · Source
• A wrecked car with a shattered windscreen after an accident
  Thue · Public domain · Source
• A heap of soft white marshmallows
  Andy Johnson · Public domain · Source
• A historic photograph of Lise Meitner
  Smithsonian Institution · Public domain · Source
• An electron microscope image of E. coli bacteria
  NIAID · Public domain · Source
• A naked mole-rat feeding inside a burrow
  Ltshears - Trisha M Shears · Public domain · Source
• A historic portrait of Alfred Nobel
  Unknown · CC BY 4.0 · Source
• The Milky Way above a mountain lake at night
  Giles Laurent · CC BY-SA 4.0 · Source
• An aspen grove with white trunks and green foliage
  NPS Photo · Public domain · Source
• A Scottish peat bog with pools and low vegetation
  Michal Klajban · CC BY-SA 4.0 · Source
• Wooden storage cubbies holding football boots
  Neil Theasby · CC BY-SA 2.0 · Source
• A Remington number one typewriter with a QWERTY keyboard
  Daderot · CC0 · Source
• A portrait of the mathematician Srinivasa Ramanujan
  Unknown authorUnknown author · Public domain · Source
• The front page of an old newspaper from a scanned archive
  Chief Khalsa Diwan · Public domain · Source
• The dome of the Pantheon in Rome seen from inside, with the opening of the oculus
  Wilfredor · CC0 · Source
• A plume of Saharan dust streaming west over the Atlantic
  European Union, Copernicus Sentinel-3 imagery · Attribution · Source
• The campanile on the University of California, Berkeley campus
  brainchildvn on Flickr · CC BY 2.0 · Source
• Handwritten lecture pages with crossings out and corrections
  Pasteur, Louis, 1822-1895 · Public domain · Source
• Two sperm whales swimming together below the surface
  Gabriel Barathieu · CC BY-SA 2.0 · Source
• The stone circle at Stonehenge in a green field
  Sandy Gerrard · CC BY-SA 2.0 · Source
• A high-resolution close-up of granulation on the surface of the Sun
  NSO/AURA/NSF · CC BY 4.0 · Source
• An empty theater corridor lined with a row of seats
  Coyau · CC BY-SA 3.0 · Source
• The reconstructed Sutton Hoo helmet at the British Museum
  user:Geni · Public domain · Source
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  Dr. Marcus Gossler · CC BY-SA 3.0 · Source
• A close view of a human tongue stuck out
  Genusfotografen (Tommas Gunnarsson) / Wikimedia · CC BY-SA 4.0 · Source
• A steaming coffee pot being opened by hand
  Tim Arterbury tim_arterbury · CC0 · Source
• A hand placing a card on a deck of cards
  tookapic on Pixabay · CC0 · Source
• A historic portrait of Alfred Wegener
  Unknown authorUnknown author · Public domain · Source
• White sand dunes in White Sands National Park
  Clyde Charles Brown · CC BY-SA 4.0 · Source
• An old mainframe computer with a control panel and a printer
  AnonymousUnknown author / Hufvudstadsbladet · CC BY 4.0 · Source
• A gray wolf in Yellowstone National Park
  National Park Service · Public domain · Source
• An open plateau of rock with a mountain ridge in the background
  RebeloZero · CC BY-SA 4.0 · Source
• A blood smear under the microscope showing sickled cells among round ones
  Keith Chambers · CC BY-SA 3.0 · Source
• A spiral galaxy photographed by the Hubble Space Telescope
  Credit: NASA, ESA, and the Hubble Heritage Team (STScI/AURA) Acknowledgement: William Blair (Johns Hopkins University) · Public domain · Source
• A fire-walking ceremony at a Japanese temple, with participants and a watching crowd
  Nesnad · CC BY-SA 4.0 · Source
• Sunlight falling through tall trees onto a quiet forest path
  Colin Park · CC BY-SA 2.0 · Source
• Two horses galloping across open dry ground
  BLMUtah · Public domain · Source
• A fish swimming among giant kelp in an underwater forest
  Joe Mabel · CC BY-SA 4.0 · Source
• Tiny colored plastic fragments seen under magnification
  U.S. Fish and Wildlife Service Headquarters · Public domain · Source
• A crowd pressing in to photograph the Mona Lisa at the Louvre
  Thomas Staub · CC0 · Source
• A made bed in a bedroom under soft lamplight
  Chris Olszewski · CC BY-SA 4.0 · Source
• Two older men talking and laughing outdoors
  USFWS Pacific Southwest Region · Public domain · Source
• A woman performing a lying hip stretch with a strap
  Helisusa · CC BY-SA 4.0 · Source
• A humpback whale blowing as it surfaces
  Charles J. Sharp · CC BY-SA 4.0 · Source
• A stranded fishing boat on dry salt flats where a lake used to be
  Adam Harangozó · CC BY-SA 4.0 · Source
• A group of people standing in cold sea water holding flags
  Kynnap · CC BY 4.0 · Source
• The control console of a vintage IBM System 360 mainframe computer
  Living Computers: Museum+Labs · CC BY-SA 4.0 · Source
• An unmanned submersible surveying the ocean floor
  NOAA · Public domain · Source
• A North Sea shoreline with sand dunes and waves
  Leif Jørgensen · CC BY-SA 4.0 · Source
• An early wooden-cased computer mouse with a single button
  Nenad Stojkovic · CC BY 2.0 · Source
• A wild European bison standing in a forest
  Charles J. Sharp · CC BY-SA 4.0 · Source
• A historic ASR-33 teletype terminal
  Rama &amp; Musée Bolo · CC BY-SA 2.0 fr · Source
• An IKEA storefront lit up at night
  Sean Young (@assanges) · CC BY 4.0 · Source
• A stack of bound printed newspapers in a room
  Babak Farrokhi from Tehran, IRAN · CC BY 2.0 · Source
• A modern insulin pen beside a skin patch
  Marius Vassnes · CC BY-SA 4.0 · Source
• Two people sitting with drinks around a table
  Shixart1985 · CC BY 2.0 · Source
• A round mirror hanging above a wooden table
  Shixart1985 · CC BY 2.0 · Source
• The twin brothers Mark and Scott Kelly in NASA flight suits
  Robert Markowitz · Public domain · Source
• A round bronze sky disc with gold ornament in a museum
  Shonagon · CC0 · Source
• An octopus resting inside a den on the seafloor
  Paolo Gamba from Paris, France · CC BY 2.0 · Source
• A historic radar magnetron from 1947
  Unknown authorUnknown author · Public domain · Source
• Colored sticky notes in several shades
  Ramesh NG · CC BY-SA 2.0 · Source
• Three people in formal dress talking and holding glasses
  IPPA photographer · CC BY 4.0 · Source
• Runners celebrating at the finish line of a city race
  Shixart1985 · CC BY 2.0 · Source
• A huge flock of starlings forming a pattern in the sky
  Moskenes · CC BY-SA 4.0 · Source
• An ancient preserved bog body displayed in a museum
  Mark Healey · CC BY-SA 2.0 · Source
• A historical photograph of Alan Turing with friends in Cornwall, 1930
  Unknown authorUnknown author · Public domain · Source
• A large radio telescope dish against a blue sky
  Amanda Slater · CC BY-SA 2.0 · Source
• A person wired to dozens of electrodes before a sleep study in a lab
  Joe Mabel · CC BY-SA 3.0 · Source
• Yellow slime mold branching across a twig and green moss
  Bernard Spragg. NZ from Christchurch, New Zealand · CC0 · Source
• Dense rows of blue solar panels seen from above
  Partonez · CC BY-SA 4.0 · Source
• Young people in Amish dress riding in a buggy
  Joseph Gage · CC BY-SA 2.0 · Source
• Fragments of medieval manuscript pages in Hebrew script
  unknown · Public domain · Source
• A printed page of the Analects in Chinese script
  Mx. Granger · CC0 · Source
• A simple bowl of food beside a clock and a lit window
  Dr Jean Fortunet · CC BY-SA 3.0 · Source
• Volunteers preparing food in the langar kitchen of the Golden Temple
  Harvinder Chandigarh · CC BY 4.0 · Source
• A human-shaped figure made of clay in dim light
  Mattsjc · CC BY-SA 4.0 · Source
• A historical calendar sheet with tables of dates
  Guillaume Le Rouge · CC0 · Source
• A crowd of pilgrims around the Kaaba in Mecca
  Unknown authorUnknown author · CC BY-SA 4.0 · Source
• A group of people praying together
  Iankgibson · CC BY-SA 4.0 · Source
• Carved marble pillars in the Jain temple at Ranakpur
  McKay Savage · CC BY 2.0 · Source
• The facade of a church cut into the rock at Lalibela
  Adam Jones from Kelowna, BC, Canada · CC BY-SA 2.0 · Source
• A sculpture of hands holding one another as a symbol of help
  Mx. Granger · CC0 · Source
• A monk sitting in meditation beneath a tree
  Deepak-nsk · CC0 · Source
• A woman sitting in meditation outdoors
  Amy Serin, PhD, BCN · CC BY-SA 4.0 · Source
• A person sitting in meditation in a lit room
  Jasmine_Sharon_Bodra · CC BY-SA 3.0 · Source
• An iftar table set with dates and dishes
  Mhizabdoul · CC BY 4.0 · Source
• The facade of the Sagrada Família in Barcelona
  Ank Kumar · CC BY-SA 4.0 · Source
• A statue of a Greek philosopher beside a therapy notebook
  Gavingaebe · CC0 · Source
• Beer glasses and bottles beside an abbey
  Joxean R. · CC BY-SA 3.0 · Source
• A child in monastic robes at a Buddhist ceremony
  Wonderlane · CC BY 2.0 · Source
• A corridor of shelving inside the Vatican archive
  Collective · CC BY 3.0 · Source
• A dervish in white robes turning during a Sema ceremony
  Valeria Kikvidze · CC BY-SA 4.0 · Source
• A page of old manuscript with Sanskrit text
  Ms Sarah Welch · CC BY-SA 4.0 · Source
• Fire burning in a metal vessel in a Zoroastrian temple
  Amir Pashaei · CC BY-SA 2.0 · Source
• A green ridge high in the Kenyan highlands
  Realt0n12 · CC BY-SA 3.0 · Source
• A woman crossing a marathon finish line with one arm raised
  Rico Shen · CC BY-SA 4.0 · Source
• A baseball pitcher releasing the ball during a game
  EricEnfermero · CC BY-SA 3.0 · Source
• Two players bent over a chess board with a clock beside them
  MichaelMaggs · CC BY-SA 3.0 · Source
• A bathing hole cut in frozen water, ringed by ice
  Tery Pitter · CC BY-SA 4.0 · Source
• Medical compression stockings in different lengths
  Lentpjuve · CC BY-SA 4.0 · Source
• A baseball batter following through on a swing in an old stadium
  AP · Public domain · Source
• A high jumper arching backwards over the bar
  Sport the library · CC BY-SA 3.0 · Source
• A runner breaking the tape on a cinder track
  Phil Roeder from Des Moines, IA, USA · CC BY 2.0 · Source
• An empty football pitch seen through a fence
  AfricanadeCuba · CC BY-SA 4.0 · Source
• A swimmer in a full-length racing suit on the starting block
  Norman Bailey/Australian Paralympic Committee · CC BY-SA 3.0 · Source
• Runners on a road in a long-distance race
  Diliff · CC BY 3.0 · Source
• A monk in white walking a forest path on a mountainside
  Unknown · CC BY-SA 3.0 de · Source
• A track cyclist in an aerodynamic tuck on a velodrome boards
  Renhour48 · CC0 · Source
• A weightlifter competing in a weightlifting event
  Amir Hoseini · CC BY 4.0 · Source
• A historical illustration of hunters in the Kalahari desert
  Internet Archive Book Images · No restrictions · Source
• A swimmer’s hand striking the touchpad at the end of a lane
  KeepActive Australia from Melbourne, VIC, Australia · CC BY-SA 4.0 · Source
• A weightlifter in a red suit during a competition
  Ministry of Youth Affairs and Sports · GODL-India · Source
• A gymnast mid-twist high above the mat
  Martin Rulsch, Wikimedia Commons · CC BY-SA 4.0 · Source
• Sprinters crouched in starting blocks at the moment before the gun
  Captain Cobra16 · CC BY-SA 4.0 · Source
• A table tennis player returning a ball during a match
  Tradicije · CC BY-SA 4.0 · Source
• A cutaway running shoe showing the layers of the sole
  Yottanesia · CC0 · Source
• A golfer standing over a short putt, hands tense on the club
  Lance Cpl. Unique B. Roberts, U.S. Marine Corps · Public domain · Source
• The Milky Way stretching above silhouetted trees in a dark night sky
  Martin Mark · CC BY-SA 4.0 · Source
• A transparent water bear under a microscope, its inner parts yellow
  DSparrow14 · CC BY-SA 4.0 · Source
• An Arctic tern hovering over water
  Charles J. Sharp · CC BY-SA 4.0 · Source
• A close-up of a terracotta soldier’s head, showing the detail of the hair and face
  Charlie · CC BY-SA 4.0 · Source
• Broken floes of Arctic sea ice seen from above
  GSFC · Public domain (NASA) · Source
• A research rocket prepared for auroral measurements
  GSFC · Public domain (NASA) · Source
• City lights tracing a river valley, seen from orbit at night
  GSFC · Public domain (NASA) · Source
• A pale long-tailed comet in a twilight sky above a dark horizon
  Aneta Pawska · CC BY 4.0 · Source
• A physical padlock resting on a laptop
  Juan Pablo Olmo · CC BY 2.0 · Source
• A NASA map studying coral reef risk in Belize
  NASA · Public domain (NASA) · Source
• Dimorphos photographed by the DART spacecraft seconds before impact
  NASA/Johns Hopkins APL · Public domain · Source
• The thin blue line of the atmosphere seen edge-on above the curve of the Earth
  NASA · Public domain · Source
• An electron micrograph of a colony of E. coli bacteria
  CDC/Janice Haney Carr · Public domain · Source
• An artist’s impression of an exoplanet and its star
  NASA, ESA, CSA, L. Hustak (STScI) · CC BY 4.0 · Source
• A ground station telescope pointed at the night sky
  NASA Goddard Space Flight Center from Greenbelt, MD, USA · Public domain · Source
• A row of cylindrical lithium-ion battery cells
  JSC · Public domain (NASA) · Source
• A world diagram of ocean currents, with red arrows for surface flow and blue for deep flow
  NASA · Public domain · Source
• An artist’s impression of Parker Solar Probe approaching the Sun
  NASA/Johns Hopkins APL/Steve Gribben · Public domain · Source
• An ion trap at NIST used for research on quantum error correction
  National Institute of Standards and Technology · Public domain · Source
• The detection stage of a NIST quantum key distribution system
  National Institute of Standards and Technology · Public domain · Source
• A total solar eclipse, the black lunar disk ringed by the white branching corona
  Michael S Adler · CC BY-SA 4.0 · Source
• A visualization of solar wind measurements
  NASA/JPL/GSFC · Public domain (NASA) · Source
• A global map of sea surface temperature anomalies
  NASA/JPL Ocean Surface Topography Team · Public domain (NASA) · Source
• A stained micrograph of a T cell, an immune cell
  NIAID · CC BY 2.0 · Source
• A table of paints and brushes between easels and canvases in a lit studio
  Instaquarelle · CC BY-SA 4.0 · Source
• A bunch of soil-covered beetroots on a wooden surface
  Bhaskaranaidu · CC BY-SA 3.0 · Source
• An aerial view of white waves breaking between blue sea and a sandy shore
  Lance Asper lance_asper · CC0 · Source
• A black mechanical calculating machine, open, against a white background
  CEphoto, Uwe Aranas · CC BY-SA 3.0 · Source
• A large choir in black clothes and pink scarves singing while seated under an open roof
  Johnnybam · CC BY-SA 4.0 · Source
• A full espresso cup on a dark saucer, seen from above
  Kritzolina · CC BY-SA 4.0 · Source
• A woman sitting on the floor working on sheets of drawing paper beside an open notebook
  Pedro Ribeiro Simões from Lisboa, Portugal · CC BY 2.0 · Source
• An empty red running track curving beside a grass field and trees
  Mk2010 · CC BY-SA 4.0 · Source
• Four dancers in green and orange costumes performing together on a blue stage
  Dolon Prova · CC BY-SA 4.0 · Source
• Three people sitting together on wooden benches and laughing
  Andres Rodriguez · CC BY-SA 2.0 · Source
• Hands writing with a pen in an open lined notebook beside a laptop
  Shixart1985 · CC BY 2.0 · Source
• A black abacus with colored beads
  Akrasia25 · CC BY-SA 4.0 · Source
• A Zen monk in a dark robe sitting in meditation, in a black and white photograph
  Unknown authorUnknown author · Public domain · Source
• An orange sand dune lit by sunrise, its far side in shadow with a few trees below
  Giles Laurent · CC BY-SA 4.0 · Source
• Crowds crossing a long suspension bridge above a river between green hills
  ビッグアップジャパン from EARTH, EARTH · CC BY-SA 2.0 · Source
• A yellow evening primrose flower seen close up from the side among green leaves
  Harry Rose from South West Rocks, Australia · CC BY 2.0 · Source
• Black and white over-ear headphones on a white background
  No machine-readable author provided. PJ assumed (based on copyright claims). · CC BY-SA 3.0 · Source
• A woman standing before a large mirror in a room, her reflection facing her in a black and white photograph
  FOTO:Fortepan — ID 6013: Adományozó/Donor: Unknown. archive copy at the Wayback Machine · Public domain · Source
• A woman at a yellow cafe table looking at a smartphone
  Shixart1985 · CC BY 2.0 · Source
• A barefoot person walking a grass path through a pine forest, photographed at ground level
  Barefootboy2005 · CC0 · Source
• The cover of the Voyager golden record with its engraved diagrams
  NASA/JPL · Public domain · Source
• A white home router with two upright antennas against a pale background
  Florian838 · CC BY 4.0 · Source
• Several cube-shaped wombat droppings lying on dry grass
  SojournerRL · CC0 · Source
• A wombat out in the open on grass
  JJ Harrison ( jjharrison89@facebook.com ) · CC BY-SA 3.0 · Source

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