I think the planet could be more transparent. The uberwhite ring around it makes it very distracting. And the same goes for that little ball next to it.
Other than that, I really like everything else. The gradient is a little staggered, but it didn't really bother me. I really like the clouds.
I kinda tried to make the gradient look like that so it would look like particles of stuff were floating around (kinda like a ring, but not). Thanks for the crit guise.