What is the source of the Earth and Moon wallpaper? What is the original source of this wallpaper, introduced in Mountain Lion? I'm guessing was taken on a Gemini or Apollo spaceflight, but I can't find it in any of NASA's albums, and the image has been re-uploaded so many times that Google Image Search isn't bearing any fruit either.



Photo from here.
It is clearly a Photoshop creation, as the shadows do not concur to the actual position of the celestial objects.