A series of artistic designs disguised as a flash
Your sense of design is very great in all of these little bite-sized levels of stars flickering around; it's very hypnotizing in its simple elegance. My advice to anyone playing this is to slowly collect the stars and just appreciate how every level is like a unique snowflake. My personal favorites are the ones where the stars will trace larger stars with their quick movements.
Just one area that could use improvement is the audio - specifically, the music. I think there maybe 3 tracks that were great on their own, but they became repetitive when looped so often throughout the course of the game's 50 levels. A single song that is lengthy, or a larger soundtrack could be a great solution for a sequel.
Speaking of which, if you ever do make a Stellar Hunter 3, I'd play it!
...Great job by the way.