Mars Rover Curiosity Photo Reveals Crescent Moon Phobos

SPACE.com
Mars Rover Curiosity Photo Reveals Crescent Moon Phobos
This close up from a photo by NASA's Mars rover Curiosity shows the Martian moon Phobos as a faint crescent in the Martian evening sky. The black blemish is the result of a bad pixel in the image data. Image released Sept. 26, 2012.
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