All About the Solar System http://www.enchantedlearning.com/subjects/astronomy/solarsystem/index.shtml
Learn important facts on each of the nine planets with reading and comprehension worksheets included. http://www.manatee.k12.fl.us/sites/elementary/palmasola/ps1gle1a2.htm
Explore these sites to learn about space, astronomy, and the planets in our Solar System. http://www.frontiernet.net/~kidpower/planets.html
Science Monster, learn about the solar system or take a tour of Mars and the stars. Also includes a virtual globe and information on gravity and inertia. http://sciencemonster.com/planets.html
An Overview of the Solar System http://seds.lpl.arizona.edu/billa/tnp/overview.html
Sky and Telescope Magazine brings you right into your own planetarium. Browse through the sky at different times during the night, even when it's cloudy to see The Big Dipper, the North Star, Jupiter and more...just type in your zip code, USA and time zone. It's like being in the Sky Lab again. http://skyandtelescope.com/observing/skychart/#