If the Moon Were Only 1 Pixel – A tediously accurate map of the solar system
This site beautifully illustrates the vastness of our solar system and the space between the planets and moon.
The Hayden Planetarium Resources Page
A great collection of resources for all things space including news and the really neat Astrophysics Visualization Archive. Oh, also, the Planetarium is run by Neil deGrasse Tyson, one of my favorite scientists alive.
Views of the Solar System
Lots of great information on our solar system
Rader’s Interactive Space Exploration
Good information on the solar system for beginners
Spacelink Library Search
An exciting way to search for information on Astronomy
Constellations and Their Stars
Wonderful astronomy site
From Stargazers to Starships
A fascinating site on astronomy, physics and math