Solid game! I was worried early on that the ricochet shots would be hard to pull off but you tweaked the mechanics well to make them usable without being too easy. You also clearly put thought and testing into where sight lines could be blocked to give a challenge without making the game too hard.
Constellation feels a bit like an educational game also, which is a nice angle I think. Maybe leaning into that could round out the game. Historical facts, science facts, when the constellations are visible, etc. Just a thought.
Also, as others have said, I had to look up the constellations haha.