Lectures tagged "aliens"

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.
Onset of Civilization and Prospects for the Future II
Fred Spier
October 12, 2005
01:08:09
Fred Speir and Jill Tarter examine the continuously unfolding story of cosmic evolution, the modern scientific story of who we are and whence we came.