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01:03:45 Thursday_Colloquium_April 9, 2015, "DAWN:… Thursday_Colloquium_April 9, 2015, "DAWN: The Asteriod Redirect Mission and the Future of Solar Electric Propulsion", Dr. John Brophy, NASA	Thursday_Colloquium_April 9, 2015, "DAWN: The Asteriod Redirect Mission and the Future of Solar Electric Propulsion", Dr. John Brophy, NASA Thursday_Colloquium_April 9, 2015, "DAWN: The Asteriod Redirect Mission and the Future of Solar Electric Propulsion", Dr. John Brophy, NASA pppl archived_to_s3 orbit power vehicle earth spacecraft propulsion mission asteroid space thing series mars rays surface lot kilowatts arm thruster nasa boulder From PPPL Admins on April 14th, 2015 0 likes 32 plays