Katamari in space! I like the idea, and it fits the theme well. The controls are a bit unintuitive, but given the 48 hours this is no dealbreaker. Unfortunately I was unable to complete the game, as I had 1 astroid left that was nowhere to be seen. Maybe it was pushed out of the level's bounds?
I think if you work out the mechanic and controls a bit more, it could be fun to assemble your own space vacuum and clean space debris!