Good effort on a game! 

From what I got this was a fully collecting game (pressing other keys didn't work other than moving). I like the idea and it could be really cool if expanded, kind of like a Bullet Hell game but with asteroids! 

I have some constructive feedback:

• As others mentioned, hitboxes were a bit off. Its usually a good idea to make them smaller than the sprite so the player doesn't feel like the game is being unfair. In a lot of Japanese Bullet Hell games, the hitbox for the ship is actually just a single pixel even. This is especially important in this game because avoiding the asteroids is the main core mechanic.
• If you fix the hitboxes, I would just triple the game's speed. Make it really fast so we can focus on avoiding things and being challenged there. If you did this, I would also add a "lives" or "health" system so people can get hit sometimes. You can also consider gradually speeding up as the game goes.

Good work!

Awesome game! I did have some trouble with some of the hitboxes, but otherwise, very nice work!

Real fun game! the only things i have to comment on is I feel it'd be nice to have an indication on how many rockets i have. other than that great game with great music!