I started writing because I wanted to share what I knew to other people

You're welcome, check me out on Scratch here: https://scratch.mit.edu/users/Infinity-creations/ Manas Pawar

Great game! I recommend you checking out Griffpatch's youtube tutorial on number counters so these variable counters don't mess up your project. If you develop your game further it would be such a great project. If your theme is a pixelated space game, make the planets pixelated too.