This mod contains the planet models from the Unstable Space mod, as well as planet textures (including the texture of the planetary rings) from a beta version of the game in .iff format, which, as far as I can tell, are generally slightly higher quality than the versions that shipped with the game.
This mod is untested. Use at your own risk. It should be compatible with all mods that do not change the files in avatars/planets and in images/planets.
This is the Better Planets, Better Skybox, and Enhanced Textures mods rolled into one mod, with ReShade compatibility and a sample settings file. Read the included Readme to see how to install this mod.
Note: If your internet connection is slow, you might not get the full file. Try this download link as an alternative then.