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    • Have days on Earth always been 24 hours?

      Have days on Earth always been 24 hours?

      Live Science via Yahoo News· 6 days ago

      Earth to slow it back down, Batygin said. Earth's day has even been longer than 24 hours, Millholland said, although only by a few milliseconds ...

    • What is the summer solstice?

      What is the summer solstice?

      KDVR Denver via Yahoo News· 2 days ago

      Meteorologists count the entire months of June, July and August as "meteorological summer." Most people, however, use the summer solstice as the official...