Andrew Siemion has devoted his professional life to the Search for Extraterrestrial Intelligence. He joined the UC Berkeley SETI effort as a grad student, and now serves as a project scientist.
February 25, 2013 • 37:45
UC Berkeley SETI researcher Andrew Siemion and his colleagues have put an upper limit on the number of civilizations in our galaxy that are capable of giving us a call. He’ll explain their reasoning and provide other search updates.
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