This is a 3D landscape created in Lightwave 3D. I did a little bit of fine tuning in Photoshop, but the render looks more or less the same as what you see here - minus the ship flying by.
For the sky, I painted a very large texture and mapped it onto a sphere. The image made use of some of the 360 panoramic skies found on CG Textures [link]
EDIT: This is supposed to be a view of the surface of the fictional planet "Zeta Tucanae D" shown here [link]
and here [link]