In celebration of the 100th anniversary of Einstein's general theory of relativity, leaders from multiple fields of physics discuss its essential insights, its lingering questions, the latest work it has sparked, and the allied fields of research that have resulted.

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Original Program Date: 05/30/2015
Host: Brian Greene
PARTICIPANTS: Gabriela González, Samir Mathur, Andrew Strominger, Cumrun Vafa, Steven Weinberg

Introduction with Brian Greene 00:00

Participant Introductions 04:25

What aspect of physics is so important that you would tattoo it on your body? 08:05

Steven Weinberg takes us from Newton to Einstein. 12:05

What was the observational support for Einstein theories? 19:20

Can Newtons ideas be extracted from Einstein's? 23:40

What did Einstein think about the Big Bang? 30:58

What did Hubble's observations discover? 33:39

What is the biggest unsolved problem in cosmology? 38:03

What is the history of Black Holes? 40:31

Einstein's thoughts on singularity. 47:33

What is a gravitational wave? 50:49

What does a gravitational wave sound like? 57:52

Combining General relativity and Quantum mechanics. 01:00:28

Cumrun Vafa on String theory. 01:10:50

Samir Mathur explains information loss at a black hole. 01:17:45

Black Holes to Wormholes. 01:28:45

Is the fabric of space time a physical thing? 01:32:24

What is the one question you would want answered in your lifetime? 01:36:37