Website: Tour the Solar System

Tour the Solar System

Warning: For those wanna-be astronauts and space travelers out there, this interactive model of the solar system could prove to be highly addictive. With one click, you can visit Saturn, Venus, or the other planets and then spin and explore them in three dimensions. The interface uses NASA calculations to precisely position all celestial bodies. Click the play button at the bottom of the screen to watch the positions of the planets and moon change as time passes. If you're impatient, you can click ahead to see how the stars align in the year 2100.

http://www.pbs.org/wgbh/nova/space/tour-solar-system.html