I really understand what you wrote in your description with the overscoping problem. Always have the same "problem" :-D
So congrats, guess this time you really made an excellent job. Very awesome polished game mechanic. Also like, that you even took the planets mass into the gravity calculation. As soon as getting used to it, the ship can be perfectly controlled and the task is immediately clear, without any additional descriptions or so.
It's one of my favorites so far i guess :-)
Btw, my highscore so far is 5200 (no idea if that's good or bad)