This is a 3D scene that I then painted into to add a lot of the fine details (like the dust plumes and distant ships). The 3D was modeled and rendered using Lightwave 3D.
The textures were painted in Photoshop.
The ringed planet is the same 3D planet I have used elsewhere: [link]
I've taken to naming my "exo-planets" after people I know, and this is named for a longtime friend and colleague.