A couple of suggestions for the "galaxy" at the end:

(1) Don't know if it can be used (as the scene only lasts a few seconds), but there is a fairly nice looking rotating galaxy in (believe it or not) the opening of HOWARD THE DUCK, of which you can get a 720p MKV out there.

(2) maybe a planet (or forming planet) can be put somewhere in the mid ground, as well as giving the swirling area around the galaxy a slight bluish tint or something to indicate it is not a galaxy, but a forming star? Also, maybe making the "arms" a bit blurred, to indicate gas forming into the star, as opposed to what indeed looks like a galaxy spiral arm.