Hold space to see the path of the orbit. Press X to erase the paths. Adjust the speed slider to change the speed.
The moon orbits approximately 12 times around the earth in the time it takes the earth to orbit the sun, which is replicated in this simulation. NOT TO SCALE The faster the speed slider is, the less accurate the path is, so it's limited to 20. The earth's path is light gray, and the moon's is purple.