The game was really good. I really liked the use of unity's particle system for the use of the rocker's propellant. And I loved the bit where there was a moving satellite.
I do have some feedback when it comes to a few small points.
I can't tell if there were any checkpoints, I know pressing R at least took me to a specific point.
The spinning space rocks didn't pose as much of a threat as your actual proportion. I'd suggest maybe increasing their scale by a little bit to make them more of an issue.
The game could have used some UI as it was really difficult to tell how far you were from your planet.
Overall however, I enjoyed this game. You did a fantastic job and I hope to see more from you in the future!