Glad to hear you like it! Physics can lead to chaoticness quite easily, evidently, so much so that when I was doing level design I found a lot of my ideas to be outright impossible xD. As for the planets, they are very beautiful indeed. I have to give credit to where credit is due: Pixel Planet Generator by Deep-Fold is an awesome tool, and with the planets in this game I barely grazed the surface of the tools capabilities.