In reallife, if you collide with a planet, the game is over...

Yes there are some 'little' bugs...
* initiale space disposition : sometime the space is unplayable (star too close to lplanetes, planetes too close)
* bounce to border should be with friction
* the level is very hard  : make intermediates levels of training to learn the proper handling of the vehicle

But I  don't know if that interest many people !

A derivation from base gosu demo (asteroide) :

Presentation: 
http://regisaubarede.posterous.com/tag/planetgame

code :
https://github.com/raubarede/ang