Is our universe an inevitable outcome of the laws of physics? Neil deGrasse Tyson and comic co-host Chuck Nice sit down with theoretical physicist Brian Greene to discuss the Many-Worlds Interpretation, the structure of the multiverse, levels of infinity, and respond to cosmic queries Neil couldn’t answer. What’s the difference between a multiverse and the many worlds interpretation? We explore Hugh Everett's Many Worlds interpretation and how it arose not from wild speculation, but from a conservative reading of the equations. Is math a supreme account of reality or just a tool for understanding more? We explore time where following the math didn’t quite work out. The trio dives into Hilbert space, Gödel's incompleteness theorems, the different sizes of infinity, and what it actually means for another version of you to exist in a parallel universe. They wrestle with the Many-Worlds Interpretation: if every possible outcome is guaranteed to happen somewhere, what does "unlikely" even mean? They also explore where these other universes actually are, whether you could ever reach them, and why gravity might be the one force capable of leaking between dimensions while light stays anchored to our membrane. How is gravity and the other forces represented in string theory? Brian breaks down string theory: its origins, its extra hidden dimensions, and why after 40 years it still hasn't produced a testable prediction. Could AI be the breakthrough that cracks it where human physicists have stalled? Then it's on to Cosmic Queries, where fans ask about the black hole information paradox and whether Hawking radiation destroys quantum information. Could a spinning universe explain cosmic expansion as centrifugal force? What does supersymmetry fix about the standard model? Could entanglement be explained by secret wormhole shortcuts? We explore quantum immortality, detecting extra dimensions and if time could be an emergent property of light. We discuss the quantization of gravity and whether life is inevitable given the laws of physics. Keep Looking Up! Thanks to our Patrons Toby Nicholls, Nick, Kevin Labranche, Mike, Sara Tunick, Ari Comart, Corey Taylor, Lance Rossie, Joe Chiarelli, Vic G, obvs, Michael Trainor, Ben Whelan, Di, Matthias Metcalfe, None Yo'Business, Kevotron, Eluivren, Vernard Ulrich jr., Paul Johnston, William Beraki, Cody Flynn, Brant Clabaugh, Eddy Stecher, Jason, Joel Watts, Luc Gareau, Thomas Fitzpatrick, Cole, Brian Flatt, Venkannareddy Yamnur, Jan Saelid, jabbbbbbbex, Al Fontaine, Alex Velasquez, Joshua Phillips, Parking Meter, neonpenny, Henry Washington, Srikar Gulukota, Marcus Aurelius, FrozenLaughs, Mr_Bman, Kevin L, Gary Matthew Spence, Big Stu, Ataka Grizzly, J, Roderick Lee Wells, Foh Chik Yong, Chris of the Green, Sensitive Knees, Laura Rivers, Darryl Harlow, Ruairidh Meyjes, Manuel Kumli, Liverpoong, Dominic, Leonard Tramiel, Cindy Brehl, Donnell Caballero, John Buck, Spyder3921, Raul Gonzales, Nick Burnett, Gints, Angelos Giannakopoulos, Igor Martens, Lucas Rayala, Randy Wing, Preston Rogers, Jason Baldwin, Julian O., Christopher Lloyd, John C, Steve Krasner, Andrea Jaramillo, spaduano, Sunny Sarraf, LINKSBYLINKS, Seoyeong LEE, typical, m m, John Latta, Mike Wyant Jr., Bhargava Kandada, Lance Wall, Will Thomas, Rick van Schijndel, Quinn Damerell, Jake Laurrell, Nefastes, Adrian R, Mike Jemison, Andrew Kell, Christopher Fahrenbach, Jiří Šebesta, Said Aspen, Tracy Thomas, and Mick & Sally for supporting us this week. Timestamps: 00:00 - Introduction: Brian Greene 05:00 - Origins of Multiverse Theory 12:46 - “The Math Tells Us” 18:01 - Hilbert Space: The Place Where the Mutliverse Is 21:59 - The Many Worlds Theory 27:21 - Are There Infinite Worlds? 32:21 - Levels of Infinity 39:18 - You’re an Improbable Configuration of Molecules 43:30 - Where Are the Other Universes? 48:48 - Visualizing Gravity in String Theory 50:18 - Figuring Out String Theory 58:12 - The Dimensions That Come Out of String Theory 01:01:40 - The State of String Theory 01:04:51 - Is the Fabric of Spacetime Wormholes? 01:07:21 - Spacetime’s Favorite Movie 01:09:28 - The Information Paradox 01:14:24 - Are We in a Rotating Universe? 01:15:52 - Quark Catastrophe 01:18:47 - Is Time a Dimension or a Field? 01:20:09 - Is Life Inevitable? 01:24:54 - Time Travel in Einstein Equations & Measuring Dark Matter 01:27:50 - What Does Supersymmetry Fix? 01:34:33 - Experiments to Find Elusive Particles 01:36:14 - Quantum Entanglement in Time Dimension 01:58:56 - Quantum Immortality 01:41:17 - Is Time an Emergent Property of Light? 01:43:07 - Is Dark Matter Connected to Expansion? 01:44:27 - Probability Clouds During Ionization 01:47:21 - Will The Graviton Help Us Reconcile Relativity 01:49:21 - Detecting Other Dimensions 01:51:17 - Counterpart Particles 01:53:16 - Why Can’t We Reach Absolute Zero? #StarTalk #NeildeGrasseTyson