Press 0 to show/hide the sun. Press numbers 1-4 to show/hide the planets, from smallest to largest. Press space to show/hide the options menu. Current Options: Orbit changes the starting speed of the planets. Speed affects the speed, and to some degree, the path of the planets.
A simple simulation of orbits! It's not 100% accurate, but it's similar enough! Will add better graphics, but I am currently working to make the inner code more readable.