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30th Anniversary of The Planetary Society
  

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SIGNS OF LIFE? DISCOVERY OF MARTIAN METHANE PLUMES
February 23, 2009
Guests: Michael Mumma, Bill Nye
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Michael Mumma directs the Goddard Center for Astrobiology. A team he leads recently announced three plumes of methane on Mars. We talk with him about how they were discovered, and what they might...  more »