Really neat concept that you explored very well. The controls are tight, and the graphics and sound are great. I felt it could be a little unforgiving at times, though. Having more checkpoints could alleviate a lot of that, though I also felt maybe the collision could be a little more forgiving. Had sometimes when I felt I hit asteroids that I shouldn't and conversely one time where part of the character sailed right through the tip of the ship and hit an asteroid on the other side.
I feel like it might be a cool inclusion to have the game show you the bounces you will make off of bubble walls, which could remove a lot of trial and error.
Either way, it's a really good jam entry.