That was a really relaxing and fun game! I think making a button on screen to reset (at the same location as the launch button) would make the experience better (I didn't like having to keep my hand on the keyboard). Some of the later levels can be cheesed by changing the size of planets mid-flight too, so maybe worth not letting them be resized during flight would help prevent that. Maybe always showing the scale controls would save a click on every planet too (and make the "done" button unessesary, clearing up some visual clutter). Great work!
