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    Mars may have captured and split a comet to create its two moons


    Mars and it's two moons, Phobos and Deimos

    Mars has two irregularly shaped moons, an inner moon named Phobos and an outer moon named Deimos

    NASA/JPL-Caltech/GSFC/Univ. of Arizona

    The two moons of Mars may once have been a single comet that was ensnared and split by the planet – and an upcoming mission could find out for certain.

    How Mars got its two moons, Phobos and Deimos, is a bit of a mystery. They are small, 27 and 15 kilometres across respectively, and both orbit around the planet’s equator. Astronomers have suggested that they may have formed after a collision on Mars’s…



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