Starship Asterisk*

http://phet.colorado.edu/sims/my-solar- ... em_en.html
(By way of metafilter.com link)

RJN wrote:http://phet.colorado.edu/sims/my-solar- ... em_en.html
(By way of metafilter.com link)

I use a number of the PHET physics simulations with middle school science students. These are all very good (and most have attached curriculum materials if you're an educator). I highly recommend them to anybody interested in physics- a great way to do real experiments without needing a well equipped lab.