This image rendered for three days on 4 computers before crashing, and losing all the work. I rendered again at wallpaper sizes only, just to get it online. I may never try rendering a commercial version of this one again.
The space scenes are the most clicked on in the Sci-Fi gallery, so I will be adding more planetary images. They will probably remain in the sci-fi gallery, as the scaling and positioning of even the most realistic scenes, will still be dictated by composition more than reality.