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This Photo of the Mars Reconnaissance Orbiter shows Mars Moon Phobos from a distance of 6,800 Kilometers. Phobos is one of two Martian Moons, the other being Deimos. Mars' Moons are fairly small and irregular in shape. Phobos is orbiting extremely close to Mars and has the closest orbit of any known Moon in the Solar System. Scientists believe that Phobos will crash into Mars in 50 Million years if it doesn't break into pieces before and forms a ring around Mars.
Image Credit: NASA/JPL-Caltech
Image Credit: NASA/JPL-Caltech

