Hmm
I like your concept, but your art and animation really need some work. For example, you could make stars on the background (like the old windows 95 screensaver) indicating youre moving forward. Second, you could make the rocks explode or something when they hit your screen, and also make multiple tipes of rocks, like a brown one and a grey one, just for example. The spaceship itself was done pretty nice, making it swing for left to right and all. The music, though, really needs work. Without further adue, it sucks. sorry.
So, in overall, this is a great potential. Just work out the whole idea and i could see this going for front page!