Lectures tagged "stars"

Life Beyond Earth?
Sara Seager
October 30, 2008
00:19:20
Sara Seager says that there is life beyond Earth. What’s more, she predicts that we will detect its biosignature on planets beyond our solar system in her lifetime.
Early Universe and the Origin of Galaxies II
Frank Wilczek
September 21, 2005
01:02:28
Frank Wilczek and Colin Normane examine the "arrow of time" of cosmic evolution.