Very nice atmosphere, art design and sound.
Pretty cool mechanic changing the orbit radius!
However, it does get very repetitive after the 2nd planet or so. Missing the orbit of a collectible just to wait for the whole circle again and again got frustrating. Them the enemies felt way too brutal, they just start blasting you and there's no way to escape because of the locked movement, so it felt very unfair.
My suggestion would be to have a variety of challenges using the rotation around the planet instead of the repetitive process of collecting the green orbs each time.