Nice!

Good work! Nice visuals, the background music fit the theme, and yeah :D I liked it.

Good stuff!

Great tutorial! How about a tutorial on adding textures to surfaces as a follow-up? :D

Awesome

Wow, this is way better, faster, etc. than any Java client, good work!!

About the physics...

Good job with the realistic physics, but I think you should aim for "fun" physics over "realistic" physics. That spaceship is just too hard to control - I can see that it would be too frustrating to put up with in a real game, and the point of games is to make them fun and as playable as possible. Keep at it though, I reckon you can turn this into something cool :-)