Moline School Dist.
The Nine Planets: A Multimedia Tour of the Solar System. Loads of information on each planet. This site has been updated in reference to Pluto no longer having the status of a planet.
A good place to also find the Mythology connection to the planets.
Solar System Exploration. From NASA, lots of facts on each planet.
National Geographic. Solar System.
Exploring the planets: Our Solar System. This is a good source for discoverer information, as well as factual information.
Planetary Fact-sheets. Lots of hard details, for those who are REAALLY into the hard science of Astronomy.
Probes and Fly-by Spacecraft. A short list from NASA of early planetary probes.
Planetary Science Spacecraft. A comprehensive list of planetary probes.
Planetary Missions (NASA). A very comprehensive list of past, present and future planetary missions. Contains detailed information.http://nssdc.gsfc.nasa.gov/planetary/projects.html
What’s in a Name on the Planets? How the Planets got their names.
NASA Welcome to the planets. A good source for high-quality images from satellite fly-bys.
Windows to the Universe: Mythology. Planetary mythology.