Really good! It took me a while for me to figure out how to hop from planets, (It's Spacebar in case anyone else needs help) but after I got that it's actually pretty fun! I like the planet hopping and the satisfying spin of the satellite as it destroys stuff. I also really liked trying to bounce off the outer orbit to come back and hit another planet I couldn't reach. I'd love to see this game get fleshed out more if it had more levels or ways to score! Maybe you need to fly the satellite through various spots between the planets to move on to the next stage or just earn more points? It'd be a cool Pop-Cap style game! It doesn't strike me as serious, but it is very fun! Great job! The only thing that I would add is a prompt or text before the player makes any inputs letting them know to use spacebar for the controls.