Skywatch

  • June 23, 2011

    Episode 339: Do We Need a Moon?

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    Shownotes

    The Earth-Moon system has been studied in great detail and for many years. It has been theorized that the presence of the Moon has had a stabilizing effect on the spin of the Earth. This also has stabilized the atmosphere of the Earth because the tilt of the Earth's axis does not wobble much relative to the orbit of the Earth around the Sun. In contrast, the tilt of Mars has likely wobbled nearly sixty degrees, leaving that planet desert-like with a thin atmosphere.