Create planets and watch the system evolve! T to turn on/off trails. C to clear R to reset the program Arrow keys to change what planet is being created Space to place a planet. PLACING A PLANET: Circular orbit: Just click to send the planet in a circle at the distance from the sun that the mouse currently is. Drag 'n' drop: Click once to set a starting position for the planet, then "pull" the mouse out from the planet to set its velocity. Let go to send the planet flying!
If you could see black holes, they'd probably look like Nicolas Cage. Picture credit to NASA
