Love the concept, although I feel it's a tad bit too difficult. I found it already hard enough to properly aim for the next planet without getting lost in space. That you can also get stuck on a planet felt needlessly frustrating to me. Would have appreciated an option to bounce yourself back into orbit here! This also made me give up on collecting all the stars relatively quick, and instead just went for getting to the green planet as quick as possible. I think tracking the completion time of a level would have served as a nice (and easily implemented) secondary goal here.