This is very neat. Though it took me a while to figure out that I need to throw the asteroids, lol.
My Highscore: 1,692 points!
Glad you enjoyed, I know that I didn't make the controls, and the game loop clear enough, that's a common feedback. Have you read the game page? Do you know about the other game mechanics? (Movement, Dashing, Effect of Multiple Asteroids)