- Anglo-Australian Observatory Astronomical Images
 - Collection of wide-field astronomical photographs, mostly made with the telescopes of the Anglo-Australian Observatory by David Malin. - APS Image Database
- Digitized sky survey plate star and galaxy images, tied to calibrated catalogue with millions of entries.
- Astrofili on the Web
- Dr. Fabio Marino's CCD images and links.
- AstroMeeting
- Stunning amateur photos of the night sky and beyond. Includes auroras, comets, satellites, constellations, planetary nebulae, supernova remnants, and galaxies.
- Astronomy Picture of the Day (APOD)
- Discover the cosmos! Each day there is a different image or photograph of our fascinating universe, along with a brief explanation written by a professional astronomer.
- Astrophysics Visualization Archive, The
- See movies that demonstrate astronomical or astrophysical phenomena found in the Solar System, galaxies, and Universe. From the American Museum of Natural History's Hayden Planetarium.
- Atlas of the Universe, An
- Contains maps of the universe and details of stars in order of their distance from Earth. Also includes a glossary and useful links.
- Beautiful Universe, The
- Colour pictures taken by Yuji Kitahara in Nagano, Japan. Includes good shots of nebulae, clusters, and galaxies.
- Chandra X-ray Observatory - A Set on Flickr
- See the spectacular set of images from NASA’s Chandra X-ray Observatory that the Smithsonian shared with the Flickr community.
- Deepspace
- Featuring gallery of nebulae, milky way, galaxy, aurora, and other images.
- Digitized Sky Survey
- Retrieve images from astronomical coordinates or object name.
- Grizzle's Space Gallery
- A mirror-like page with hundreds of different images of planets and other astronomical objects.
- ICSTARS Astronomy
- Pictures, stories, past and present events, and solar activity reports.
- ISO Science Results
- NCSA Astronomy Digital Image Library
- Collecting astronomical, research-ready images and making them available to the astronomical community.
- Night Sky Live
- Catch a glimpse of the night sky above some of the world's premier observatories.
- NSSDC Photo Gallery
- NASA photographs of planetary and other celestial objects such as nebulae, galaxies, and stars. The source of the image and the process involved in producing the image are included wherever possible.
- Observational Mishaps
- An image database of astronomical observations which exhibit problems one might encounter during observing runs.
- Space Finder
- Features a variety of pictures and colour enhanced images of the planets, nebulas, and more.
- Space Image Libraries
- Variety of sources for space-related images presented by NASA's Aerospace Education Services Program at Oklahoma State University.
- Space Images Archive
- Images of astronomical and solar system bodies, spacecraft and rocketry, as well as every manned U.S. space mission.
- Space Shots
- Space photography, John Glenn, Mercury 6, and STS-95 live mission pictures. A presentation by Kodak.
- SPACE.com: SpaceViews
- Offers image galleries, wallpapers, postcards, and screen themes with images of planets, stars, suns, and nebulae as well as space-related art.
- Spacearium Galleria
- Contains public domain images of astronomical phenomena and pictures from the history of space exploration.
- SpacePix
- Photographs and explanations of astronomical objects and spacecraft.
- Stellar Scenes
- Celestial photo album which includes comets, nebulae and clusters, constellations, the Milky Way, the Moon, and more.
- The World At Night (TWAN)
- Learn about TWAN, a project to produce and present a collection of stunning photographs and time-lapse videos of the world's landmarks against the celestial attractions.
- Ultimativ Cosmos Page
- Pictures of nebulae, planets and various galaxies.
- Voyager Image Catalog Query Form
- Allows users to find photos of Jupiter, Saturn, Uranus, and Neptune from the Voyager 1 and 2 missions in their original form for mosaics and colour processing.
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