The art style is really polished in the style you chose, it looks good, I really liked the addition of night phases that really gave me a sense of progression. The music and SFX fits the graphics really well!
I felt like it was difficult to handle bot the shooting and the moving at the same time, maybe by making the player a bit more visible or bigger it would make it easier to follow both at the same time. Or perhaps making the stars hitbox a bit bigger would make it easier to pick them up while looking where to shoot. I don't know.
Otherwise, nice game, well done!