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Annular Eclipse of the Sun by Phobos, as Seen by Curiosity

Annular Eclipse of the Sun by Phobos, as Seen by Curiosity

August 30, 2013 - This set of three images shows views three seconds apart as the larger of Mars' two moons, Phobos, passed directly in front of the sun as seen by NASA's Mars rover Curiosity.  Curiosity photographed this annular, or ring, eclipse with the telephoto-lens camera of the rover's Mast Camera pair (right Mastcam) on Aug. 17, 2013, the 369th Martian day, or sol, of Curiosity's work on Mars.

Curiosity paused during its drive that sol for a set of observations that the camera team carefully calculated to record this celestial event. The rover's observations of Phobos help make researchers' knowledge of the moon's orbit even more precise.

( via nasa.gov )


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