Epic Planets WIP (Work In Progress). This is the basis, but I want to put a lot of time and effort to get all the intricate details in.
Edit: Got a bit more done to the nebula thing. Added clouds and redid the shadow on the planet on the left, as well as put city lights in the shadow. Added more texture to the planet on the right. Colored both major planets to make the lighting fit in (reddish tint).