Phobos, the larger of Mars' two moons, transits in front of the sun in this sequence of 10 images taken by the panoramic camera (Pancam) of NASA's Mars Exploration Rover Opportunity during the afternoon of the rover's 3,078th Martian day, or sol (Sept. 20, 2012).

October 15, 2012

Phobos, the larger of Mars' two moons, transits in front of the sun in this sequence of 10 images taken by the panoramic camera (Pancam) of NASA's Mars Exploration Rover Opportunity during the afternoon of the rover's 3,078th Martian day, or sol (Sept. 20, 2012). The apparent speed of the transit is accelerated in this clip.

Credit

NASA/JPL-Caltech/Cornell Univ./Arizona State Univ.

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