Thank you so much for such an extensive comment! This little game is happy.
I dealt with the artistic part of the game so I'll respond according to that. The piano for the music was both a conscious decision and one that was born out of me not having enough time to add more instruments. I would've loved a violin or some other string instrument as accompaniment but I think piano solo works great for a desolate space environment anyways.
The asteroid breaking apart was an effect I made and I think I could've made it clearer that they were just a VFX but I figured players would probably bump into one of them soon enough and discover they're harmless.
The game was indeed supposed to be a love story with Sol, the sun, being the love interest and a final boss battle and solar flares and other cool jazz but alas time was too tight of a constraint.