http://www.seds.org/billa/tnp "The Nine Planets: A Multimedia Tour of the Solar System," by Bill Arnett Excellent pictures, glossary, and other info. One of the best astronomy web sites.

http://bang.lanl.gov/solarsys/earth.htm

"Views of the Solar System," by Calvin Hamilton

Nice pictures, lots of text, fact sheets, and glossary. Essentially an on-line text.

http://pds.jpl.nasa.gov/planets

"Welcome to the Planets." Nice pictures, fact sheets, and other info.

http://nssdc.gsfc.nasa.gov/photo_gallery/photogallery-earth.html

National Space Science Data Center A NASA site with lots of pictures, fact sheets, glossary.

http://nssdc.gsfc.nasa.gov/photo_gallery/PhotoGallery-SolarSystem.html/

Solar System Family Portrait

http://www.jpl.nasa.gov/galileo/

Galileo probe (NASA Ames)

http://quest.arc.nasa.gov/jupiter.html

NASA's K-12 Internet Initiative

http://www.jpl.nasa.gov/cassini/

Cassini misssion