That was neat! Quite rough around the edges, but competent. The graphics are readable, and I like the parallax effect of flying around space. The soundtrack has an epic quality to it; I especially like the battle music!
This might only be a problem on my end, but the music is sometimes really loud, immediately peaking the audio above 0.0 dB. It starts being this loud on the title screen, and will randomly become that loud during gameplay.
All-in-all, good work! Congratulations on the submission!