This is Ascent:
If you have ever spent any time trying to find a background in Windows XP, and you've looked at the default ones, then the above image is probably familiar. This morning, when I was walking from my residence to the main building, I looked over on the horizon to the west and saw something that looked almost exactly like what's above. Well... not exactly, but the sky was blue, the mountains were a darker blue and the moon was just hovering there like that (albeit not quite as large). I went and showed a few friends and they immediately recognized it.