Physics & Astronomy: Images & Multimedia

A collection and archive of high-quality images and multimedia from NASA and aeronautic facilities and research available for educational purposes.

A vast archive of photographs, scientific facts, text, graphics and videos of the Sun, planets, moons, comets, asteroids, and more.

Also called Sky-Map, Wikisky is an interactive, free, noncommercial website "that aims to consolidate astronomical information while letting an international audience participate by adding photos and comments and by communicating in forums"