Incredible! How did you manage to fit so many levels and gimmicks in three hours? Each level is so well-crafted, I especially love the orbiting planets. The visual effects are so good and the sounds are crunchy. Each level had a satisfying solution, I can feel the difference of having a play tester.
My only complaint is that there's no skip button, and I sometimes have to wait as I drift away. I think a button to restart a launch would be nice for impatient people like me. Other than that, this is a really solid entry. Well done!