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      Knowledge is Power

      Scientific American October 1999

      The Hidden Ocean of Europa

      Doodles and freckles, creamy plains and crypto-icebergs--the amazing surface of Jupiter's brightest icy moon hints at a global sea underneath

      • By Robert T. Pappalardo, James W. Head, Ronald Greeley on October 1, 1999

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      More in the October 1999 issue of Scientific American
      • Modeling the Atomic Universe
      • TO BOLDLY GROW...
      • A Matter of Degrees
      View Full Contents
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