This picture was taken by the fisheye lens camera on the Huygens probe as in descended to the surface of Titan - Saturn's largest moon. Titan is wreathed by a thick layer of clouds, and its suface cannot be seen from the Earth. This probe was released from the Cassini orbiter on a close approach of Titan, and parachuted down through Titan's atmosphere to land on the surface. Even cooler, if you check on NASA's website you can find a time-lapse video of the descent to the surface, as seen by this fisheye lens. Very cool.
http://msnbc.msn.com/id/12953794/?GT1=8199
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