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• Ancient Earth, Alien Earths Event (201408200011HQ)

  • Uploaded by: NASA HQ PHOTO
  • License: CC BY-NC-ND 2.0
  • 0 comments
  • 2 favorites
  • 40,427 views
  • Date taken: 2014-08-20 18:19:29
  • Date uploaded: 2014-08-21
  • Tags: ancientearthalienearthsevent, drdavidhgrinspoon, earlyearth, habitableplanets, moderator, nasa, nasahq, nsf, panelists, scientists, seniorscientistatplanetaryscienceinstitute, smithsonianinstitution, webbauditorium, washington, dc, usa, aubreygemignani
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