Watch an online webcast of an Harvard-Smithsonian Observatory Night event tonight (Thursday, February 20, 2014) at 7:30PM celebrating "50 Years After the Discovery of the Big Bang", featuring four 20 minute presentations by Alan Guth, Bob Wilson, Bob Kirshner, and Avi Loeb.

Second link for broadcast: http://www.space.com/17933-nasa-television-webcasts-live-space-tv.html

This event coincides with the publication of a major overview of the same topic in the Smithsonian Magazine.