Nice game !
The atmosphere is really cute :)
I can't tell if the yellow planet is happy or angry that we destroyed its moon :D
There is a small bug, if you hover the meteor when left click is already pressed, it will launch the meteor super fast without any trajectory hint.
Also, you should probably add a bit of tolerance for when the moon pass behind its planet, it's a bit frustrating :(
All in all, I think I kinda suck at the game but I did complete it, yay !