Controls are sluggish, clean up the code.
Extremely boring, not being able to shoot.. or shoot very often.
Around 600 points it speeds up faster than you can respond. Really?

By my count, that makes it a 2 star game, but it feels like at least 3 stars. Fix it up and it could be one of the great ones.

Controls not responding well

I was thinking about it could be my crappy machine, but I doubt it, the controls are not responding well and that's a huge, non intended set back, and difficulty, sometimes the spaceship moves over, sometimes it doesn't respond, and since the meteorits are randomly comming the difficulty is all up to luck. A designed out stage, and a better controls would have made a better experience now it's just frustration. The concept is fine, reminds me to the meteorit avoiding minigames in MDK 2. The music is fune, The graphics are nice, but the controls and the leveldesign needs a huge polish.
I give a 6.

Not bad

Couple of improvements you could make. Moveability with WASD and the mouse and option to pick before starting. The ability to pause would be good too. I dunno if you have this (only got to T700) but powerups would be useful/interesting especially if you make them come out of the asteroids when you shoot them. Good game though. I like it.