Interesting game! I kept trying to beat my PB, max I got was 85:
One nice thing about it is that because the sun starts small, you can try right at the beginning to quickly loop as many times you can before it becomes tougher. However, dealing with the gravity is something you slowly learn before you're able to pull it off!
The supernova effect is a nice touch. The sound effects also work really well.
In a way, this game reminded me of that minigame from Crash Bash (PSX), called Crash Dash, in which you have to go round and round as quickly as possible while facing your opponents.
Good job!