Big Picture Science – Doomsday Live: Cosmic Threats part 2

by Gary Niederhoff on November 26, 2012

Part 5 of Doomsday Live, Part I, featuring Guy Harrison, science writer and author of 50 Popular Beliefs That People Think Are True, and Andrew Fraknoi, Chair of the Astronomy Department at Foothill College, Los Altos Hills, California, continuing the discussion of cosmological threats such as asteroids and supernovae.
(TRT 7:34)

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