Solid game. Controls feel great, even though the sensitivity is somewhat too high. Fitting music and cool effects. Well done.
There was a bug that I believe I should point out. When tracing the final shape of the constellation, you can still get hit with asteroids and lose, which happened to me. Also, for some reason, after completing the big dipper level, it restarted instead of going to the next one. Not sure if I'm missing something there.
Great job!