It's hot. Working is a bit difficult. I'm playing around with different control schemes and trying to optimize the mesh representation (instead of creating a huge vertex buffer every frame). I've made a neat change that adjusts the camera orientation relative to your position on the planet (so whereever you are feels like up) while you're in the atmosphere. When you leave the atmosphere the camera orients to the plane of the solar system (currently 0, 1, 0). Hard to show that so no screenshots. It will be hot tomorrow too so likely not much advancement.