Use the arrow keys. Press space to change reference frames. Use W and S to change time speed. Use A and D to zoom in and out. 3 will zoom in fully. 4 will zoom out fully. 9 will set time speed to its slowest. 0 will set the time speed to its fastest. Ignore the NEO drag T variable (it's for my purposes only). Also, ignore Moon (I'm adding it in soon)
