This product is amazing, it does everything you expect it to and is very easy to use. I haven't even done gravity in school yet and i managed to create a nice little binary star system :). As another review said 'I wish i had this when i was doing physics at school' well, now i have it before i have done it in school, yay! :D

As soon as you can, try the examples in the data folder, they're very good.
For next version i think it would be cool to have a screen saver, that way i could show off 10 planets orbiting around eachother at different velocities easily :)