Needs more pizazz
This does do a good game of what it is supposed to do in terms of a game. The main problem is that there is really not that much detail put into it. I have played far worse games, but there is just so much room for improvement here. For one thing, you really should have some music or at least some sound effects. The cosmo pilot looked Asian to me. It got pretty repetitive as you just shot asteroids over and over.
In fact, every level seems to look the same. You could really mix it up by having a different background or having some different platforms to go onto. It is almost too easy as the fuel many times seems to just fall near the rocketship. The graphics are good, but you need to show off your creative side more. Variety always works in anything.