"Realistic" orbital mechanics - your goal is to dock your Apollo CM/SM to the Soyuz spacecraft. Soyuz is in an almost circular orbit and keeps her docking receiver trailing her. Arrow keys to thrust and turn. Hint: Apollo is inserted in an orbit that only needs slight adjustment to dock - use thrust sparingly. Let Apollo orbit once before using thrust. This is very tricky, lower orbits move faster, higher orbits slower, and you must have the two ships aligned pretty closely to dock successfully. Manage your closing velocity and use that to guide your inputs....
