At only 900 x 600, it’s not really a great wallpaper, but I couldn’t resist the creativity. Featured as the April 11 Astronomy Picture of the Day, this image shows an impossible scene: the utterly dark skyline of Pudong in Shanghai, China, with a gloriously lit Milky Way behind it.
To create the vision of an unseen reality, part of a series of Darkened Cities, photographer Thierry Cohen has combined a daytime image of the city skyline with an image matched in orientation from a dark sky region at the same latitude, just west of Merzouga, Morocco. The result finds the night sky that hours earlier also arced over Shanghai, but drowned in the lights of a city upon the sea.
Click the image to biggify, and follow the above link to the full explanation at APOD. More photos in the series can be found at the photographer’s site, but alas, they aren’t as satisfyingly big and are thus harder to make out.