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      Knowledge is Power

      Scientific American December 1999

      Exploring Our Universe and Others

      In the 21st century cosmologists will unravel the mystery of our universe's birth-and perhaps prove the existence of other universes as well

      • By Martin Rees on December 1, 1999

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      More in the December 1999 issue of Scientific American
      • Defend the Roman Empire!
      • The Editors Recommend
      • The Unexpected Science to Come...
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