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Information about each planet and moon in our solar system with many pictures, discussion of the history of its discovery, exploration, and physical characteristics. In addition to the planets, there are also pages about the Sun, many moons, and aste...

Space.com provides information on everything Space - satellites, stars, astronomy, the Sun, planets, NASA and more.

The Center for Science Education at UC Berkeley Space Sciences Laboratory is dedicated to making space science information accessible to educators and public.

Fact Monster is a free reference site for students, teachers, and parents. Get homework help and find facts on thousands of subjects, including sports, entertainment, geography, history, biography, education, and health.

This site is intended for students in grades K through 8.

The Solar System Exploration website is a one-stop shop for planetary information published by NASA

Curious About Astronomy? Astronomers at Cornell University will answer your questions. Contains an extensive archive of previous questions, astronomy-related links and more.

We are the official body that deals with astrometric observations and orbits of minor planets (asteroids) and comets.

Space and astronomy news

wikiHow is a wiki based collaboration to build the world’s largest, highest quality how to manual. Our multilingual how to manual has free step-by-step instructions on how to do all types of things.

Welcome to Cool Cosmos, NASA