I originally thought this was a space scene, but I find it a lot more special now that I see the mountain range and atmospheric perspective. Very beautiful, strangely peaceful, and totally a personal favorite.
I very much like the clear, defined lines of your merchant ships and the clarity of the scene. It's just great that the foreground is rather shapeless but that the picture get's more and more accurate the more it centres on the main focus against a - once more - blurry background.
The grey tones of the painting are also great because they create a very strong "science fiction feeling"! - Awesome job!