Nobel Laureate Roger Penrose joins Brian Greene to explore some of his most iconic insights into the nature of time, black holes, and cosmological evolution.

This program is part of the Big Ideas series, supported by the John Templeton Foundation.

Participant: Sir Roger Penrose
Moderator: Brian Greene

00:00 Introduction
00:49 Participant Introduction
02:02 A Working Definition of Time
07:25 Applying Entropy and The Second Law to the Directionality of Time
16:37 What The Early Universe May Have Looked Like
20:27 Solving the Puzzle of The Past Hypothesis
31:46 Investigating Exponential Expansion
38:50 New Discoveries and Discourse Since 2004
55:41 A Peek Into Sir Roger Penrose’s Continuing Research
01:08:17 Credits

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