Welcome to the Planets
http://pds.jpl.nasa.gov/planets/
This is a collection of many of the best images from NASA's planetary exploration program. The collection has been extracted from the interactive program "Welcome to the Planets" which was distributed on the Planetary Data System Educational CD-ROM Version 1.5 in December 1995. It has also been updated with the addition of more recent images.
When you see the NASA Photojournal button, you may link to further information about the image, and a variety of image download options.
NASA Observatorium
http://observe.arc.nasa.gov/nasa/core.shtml.html
Here you will find a space calendar, a comet recipe, and links to space exploration and views of the Solar System. NASA's Observatorium is a public access site for Earth and space data. Here you'll find pictures of the Earth, planets, stars, and other cool stuff, as well as the stories behind those images. Archived in December 1999.
SpaceViews Image Gallery
http://www.space.com/spaceviews
This site has numerous Image Galleries. Includes an Image of the Day feature and a Universal Viewer with Zoom Views. There are Wallpapers,
Postcards from Space, and ScreenThemes. Site designers used Boeing's Orbital Space Plane to collect some of the images.
NSSDC Photo Gallery
http://nssdc.gsfc.nasa.gov/photo_gallery/
Dr. Edwin V. Bell, at the Goddard Space Flight Center Greenbelt, MD curates this site. There is some overlap with the other NSSDC site, but different text and some other images can be found here.
National Geographic Science and Space Photo Galleries
http://www.nationalgeographic.com/siteindex/photogallery/science.html
Find pictures, wallpaper, amazing images of space and various science related images originally from the photographers of National Geographic.
The Best of the Hubble Space Telescope
http://www.seds.org/hst/hst.html
A presentation and explanation of some of the best images taken by the Hubble Space Telescope.
The Gateway to Astronaut Photography of Earth
http://earth.jsc.nasa.gov/
Photographs taken by the astronauts coming down from the Space Shuttle and International Space Station on a daily basis are added to the more than 469,576 (count updated monthly) views of the Earth.
Views of the Solar System
http://www.solarviews.com/eng/homepage.htm
Views of the Solar System presents a vivid multimedia adventure unfolding the splendor of the Sun, planets, moons, comets, asteroids, and more. Discover the latest scientific information, or study the history of space exploration, rocketry, early astronauts, space missions, spacecraft through a vast archive of photographs, scientific facts, text, graphics and videos. Views of the Solar System offers enhanced exploration and educational enjoyment of the solar system and beyond.
Earth and Moon Viewer
http://www.fourmilab.ch/earthview/vplanet.html
http://www.fourmilab.ch
This site allows you to view the sky, stars at the horizon, the solar system, orbits of asteroids and comets, and more with Home Planet. There is a public domain Earth/Space/Sky simulator, where you can view either a map of the Earth showing the day and night regions at this moment, or view the Earth from space.