Up arrow - Prograde, Down arrow - Retrograde Left arrow - Normal, Right arrow - Antinormal Space-bar to toggle orbit trail. Nothing happening? Try increasing the sim speed or G. Burns take time. Start small, watch the results! Can you make a circular orbit?
An updated version of a really bad gravity program from when I was a kid. This one actually works. It uses RK2 to approximate Newton's laws. My high score is an apo of 149 and a peri of 147.
