113224View
0m 0sLenght
824Rating

In March 2014, scientists working on the BICEP2 telescope at the South Pole reported an incredible discovery: a swirling pattern in the cosmic background radiation that appeared to indicate the presence of gravitational waves. But do these ripples in space-time hold up under further scientific scrutiny? See a panel of world-class researchers weighing the evidence at "Ripples From the Big Bang: Listening to the Beginning of Time." Subscribe to our YouTube Channel for all the latest from WSF. Visit our Website: http://www.worldsciencefestival.com/ Like us on Facebook: https://www.facebook.com/worldsciencefestival Follow us on twitter: https://twitter.com/WorldSciFest Participants: Andrei Linde, Alan Guth, Amber Miller, John Kovac, Paul Steinhardt Original Program Date: May 30, 2014 Brian Greene's Introduction. 00:12 Participant Introductions. 20:34 Can we confirm that there are ripples in the fabric of space? 22:19 What did you find with BICEP2? 26:05 What is the inflationary theory? 31:46 What is making the universe accelerate? 37:33 What were the main issues with the inflationary theory? 44:42 What is chaotic inflation? 51:22 How do we calculate density motivations? 59:00 Looking for cosmic fluctuation. 1:03:40 How close were the predictions to the observations? 1:09:03 How confident are you that the swirls are coming from quantum fluctuations? 1:14:40 What are the concerns about the inflationary theory? 1:23:49 Final thoughts. 1:29:33