FYI, your game doesn't install easily in the itch.io desktop client. They prefer a zip file. Check out the butler app from itch.io to make your builds more easily.
Cool little game. Strange that there's no help information either in the game or on the game page on itch. Didn't take long to get the gist of it though. I liked the visuals and the audio. Game-Feel was solid. It felt good to crash the planets into each other.