Big Picture Science – Doomsday Live: Cosmic Threats part 1

Part 4 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, addressing the actual threats posed by cosmological forces.
(TRT 9:01)

Tagged as: astronomy, cosmology