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    • What is the Universe? - NASA Science

      What is the Universe? - NASA Science

      NASA· 3 hours ago

      The universe is everything. It includes all of space, and all the matter and energy that space contains. It even includes time itself and, of course, it...

    • Climate change is slowing Earth’s rotation

      Climate change is slowing Earth’s rotation

      The Economist· 22 hours ago

      THE PERFECT day should have 86,400 seconds: 24 hours for Earth to spin around its axis, 60 minutes in each hour, and 60 seconds in each minute. Tidal...