Nice job, overall. The asteroids look great, in particular.
That long, rotating asteroid belt kept me waiting though, sitting on one of the stars until it passed by, for what felt like an awful long time.
Also, the pause once you clear a stage is a little odd. Maybe some visual or audio feedback to let you know that you've cleared the stage while you wait for the fade-out would be a nice addition?
In general though, a solid constellation-themed puzzler!