Planetary Motion Simulator

[David M]

I was trying to remember who it was that a few months ago was looking for a planetary motion simulator? This one is awesome. Try all the different possibilities.

http://phet.colorado.edu/sims/my-solar-system/my-solar-system.swf

[TwoRails]

That's pretty neat! Glad you posted it, David M :)

[Chris in U.K.]

Cool, David.

Here's a link to a site that does the calculations for making a scale model of the solar system.

For example, if you make your model Sun the size of a baseball, Pluto (if it still counts) would be 4/1000 inches diameter, and nearly 1000 feet away.

Lots of other info and links too.

http://www.exploratorium.edu/ronh/solar_system/index.html

Enjoy,

Chris.