I imagine getting the multiple planet's gravity to work must have taken some effort haha!
I know that this must be a challenging thing to accomplish, but it would be nice if the rocket stopped being affected by any gravity after reaching a certain distance (right now, you are always facing directly downward toward a planet). It would be fun to cruise around freely in a rocket.
The planets look very nice, I wish there were more of them!
It would also have been great to have some thrust particles come out of the rocket, to visualize that you are flying a bit better.
Great work! I hope you continue to work on this :)