Okay, time for the inexperienced high school student to state his uneducated opinion:
Who was it that decided space sounds like John Williams??? I think composers interested in writing music for Sci-Fi movies and video games should broaden thier genre by trying out different sounds and rythmes. It seems a little repetative, you could probably mix some things up a little bit. But i could definately see it as the main menu or end credits of a first person alien shooter! Great job! :)