Background thingy

I love this! The colors in the background are well-blended and natural. Is this photoshop, or painted, or a natural pic? It looks like all three. It reminds me of Across the Universe by Beth Revis, and the song by The Beatles. The stars are dazzling, and just looking at the picture would make anyone feel calm. This is an amazing background, and I loved it very much. The moon may look a bit too bright for the shade combinations, if this is a painting/photoshop. Maybe its just that i'm not looking at it right. Otherwise, this was amaizng!!!Do you have similar work like this?