We ended last year with one of our favorite photos of the decade: an extraterrestrial sunset photographed in 2005 by the Mars Exploration Rover Spirit. We thought we'd end this year with another Martian sunset. This one was captured last month by Spirit's twin, Opportunity, in a series of photographs, which the rover science team combined and enhanced to create a seamless simulated descent. A bonus footage included in the embedded video above shows the moon Phobos passing in front of the sun.
