Planet Builder - Create Your Own Solar System

With Planet Builder, you are the architect of your own solar system. Build planets and moons, and choose their attributes such as name, size, orbit speed, spin speed, tilt, rings, orbit distance, and appearance. Watch them orbit in real-time 3D, creating trails behind them as they circle the sun. Want to make things interesting? Press the asteroid attack button and watch as asteroids knock your planets out of orbit! Or, shoot asteroids at them yourself with the Asteroid Cannon. Make your sun go ...