Here is an experiment of a double planet beyond horizon , the only thing is I dunno why but the mood is rendered behind the stars so the stars get rendered in front of the moon is that possible to change?
I am loving Cryengine but , It is quite limited according to stars and sky system modding , I have worked with the gamebyro engine of Oblivion and there they have a lot of moddability that allows even have cycles and moon phases as well as be able to replace the whiole star systems without having to renounce to dinamicity…