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The term "supermoon" is one borrowed from astrology. Scientists would prefer to call the phenomenon a perigee moon, or perigee-syzygy of the Earth-moon-sun system. In lay terms, it's when a full moon coincides with its closest approach to Earth. There was one this weekend, which caught the attenti...

11 months ago 0 Comments
July 14, 2014 at 12:01PM