It's a start...
Forgive me if I focus on the negative in my reviews, there are good parts which by in large I'm not talking about. However I've never found reviews which overly focus on what is good to be very helpful. What I'm trying to say is don't be offended or discouraged by this or my following reviews, I'm honestly trying to help you to improve:
Animation: Everything you've done in this movie is no more than a basic tween, there is way more to animation than just linearly moving an object from one point to another (or applying a transparency linearly). For starters, when the craft moves to avoid the asteroids it would be nice if you rotated it when moves up or down. The flame on the back of the ship, albiet your best animation in this movie needs alot of work. What if instead of a circle you made it a flame? Just some startering ideas...
Artwork: Your artwork is up to Newgrounds standards, I don't think this area needs anything more than the natural improvement that will happen as you draw more. Already your latest movie shows this upward movement in artwork.
Story: The actual plot your setting up sounds good to me, but I dislike how much you explain in text, and how little you actually show in your animations. I realize how much of the ideas in the text are hard to animate "big picture" ideas. But this is an animation web site, not a story website with animation to back up.
Overall: Wayyy to short, in my opinion if you combined all three of your movies you might have an okay sized story, but this movie lacks the sustenance to stand alone. However, you have set up a story with the promise of being somewhat interesting, and that's something!