Cosmologist Hiranya Peiris joins Brian Greene to discuss pressing cosmological mysteries spanning dark matter, dark energy, the expansion rate of space, and the possibility of a multiverse. This program is part of the Big Ideas series, supported by the John Templeton Foundation. Participant: Hiranya Peiris Moderator: Brian Greene 00:00 - Introduction 01:06 - Welcome Hiranya Peiris 07:45 - "Just Six Numbers" of the universe 11:22 - Inflationary theory is just a toy model 17:01 - What is the confidence that Dark matter is real? 28:52 - AXIONS and the strong CP problem 39:15 - Lessons from WMAP 45:22 - The Vera Rubin Telescope: A New Era in Astronomy 49:34 - How AI Will Analyze Astronomical Data 52: 45 - A Gravitational Wave Compact Object Merger of Neutron Stars 01:05:38 - What We Know About Dark Energy Today 01:14:11 - The Multiverse: Science or Speculation? 01:22:11 - The Power of Quantum Simulations 01:32:50 - Credits VISIT our Website: worldsciencefestival.com FOLLOW...