Very impresive.
Graphicaly the game was very impresive even thought some textures were stretch at some places but this is a very common problem (I believe that as you reached this level you will eventually fix that too)
But most impresive of all were the collision detection and responce it worked realy well, even thought at some places the ship danced on the normals I guess and produced a like rapid fire sound. But this was expected in that complex geometry.
Physics in general were good but I had realy hard time landing on the planets as I was bouncing on and off. Maybe it was just me cause I am not used to this kind of games.
Also traveling from planed to planet was quite boring cause the space felt empty, but this is expected too if we take in acount the limitations of the Jam.
Sound fx and music were spot on.
The number one problem of the game is that it looks like more as a technical presentetion than a game.
P.S. The sound required an instalation of OpenAL to work. I uninstalled it to check this out.