Greatest Mysteries of Gravity | Brian Greene & Kip Thorne | World Science Festival

Nobel laureate Kip Thorne joins Brian Greene to trace a story that runs from the trenches of World War I to the rise of gravitational-wave astronomy—a journey that eventually carried black holes to Hollywood in Interstellar through Thorne’s work with Christopher Nolan. He revisits the improbable path from Einstein’s equations to the moment LIGO—an experiment he helped imagine and that contributed to his Nobel Prize—captured the sound of two black holes colliding more than a billion light-years away. Along the way, he explores puzzles that stymied generations: the nature of horizons and singularities, the mathematical insights of Schwarzschild and Penrose, and the profound divide between what an outside observer sees and what a falling observer experiences. The conversation also turns to the human side of deep physics—Einstein’s doubts, Wheeler’s battles, Oppenheimer’s arguments, the Soviet school’s skepticism—revealing the messy, exhilarating way the field actually moves forward. This program is part of the Rethinking Reality series, supported by the John Templeton Foundation. Participant: Kip Thorne Moderator: Brian Greene #worldsciencefestival #briangreene #cosmology #astrophysics Don't miss a video! Subscribe NOW: https://www.youtube.com/worldsciencef... ABOUT WORLD SCIENCE FESTIVAL: The World Science Festival (WSF) is a multimedia organization bringing the most transformative ideas in science to global audiences. Through long- and short-form videos spanning physics, cosmology, quantum mechanics, biology, neuroscience, consciousness, medicine, space exploration, the dilemma of free will, artificial intelligence, engineering, robotics, and beyond. WSF gathers world-renowned scientists, artists, and thinkers for dynamic discussions, debates, lectures, performances, films, and immersive live experiences. Founded in 2008 and headquartered in New York City, the World Science Festival is a production of the World Science Foundation, a 501(c)(3) nonprofit organization. Our mission is to cultivate a public informed by science, inspired by its wonder, convinced of its value, and prepared to engage with its implications for the future. With live events reaching millions worldwide and hundreds of millions of digital views, WSF continues to expand its global impact through festivals, educational initiatives like World Science U, and digital content that explores the near and far future of our world. FOLLOW WORLD SCIENCE FESTIVAL: Website: https://worldsciencefestival.com/ Instagram:   / worldscifest   TikTok:   / worldscifest   X(Twitter):   / worldscifest   Facebook:   / worldsciencefestival   LinkedIn:   / world-science-festival   Chapters: 00:00:00- Introduction: Black Holes, Gravity & Film 00:01:12- Early Theories of Black Holes (Michell & Laplace) 00:02:48- Schwarzschild in the Trenches: The First Exact Solution 00:07:40- Oppenheimer–Snyder Collapse & Singularities 00:13:09- Two Perspectives on Falling into a Black Hole 00:14:41- What Happens Inside a Black Hole 00:15:35- Reconciling the Two Perspectives of Infall 00:21:50- Hawking Radiation & Evaporating Black Holes 00:32:07- Wheeler, Misner & Writing Gravitation 00:34:58- Wheeler’s Influence & The Bill Press Story 00:41:04- The Origin of the Term “Black Hole 00:53:58- Joseph Weber and the First Gravitational-Wave Searches 01:00:21- Ray Weiss and the Interferometer Idea 01:08:37- Building LIGO: Committees, Leadership & Design 01:33:38- Advanced LIGO, Sensitivity & the First Detection 01:51:09- Quantum Non-Demolition & Future Detectors 02:04:43- Big Bang Observer & Future Space Missions 02:06:56- Christopher Nolan, Interstellar & Scientific Visualization 02:14:12- Wormholes, Exotic Matter & What Might Be Real 02:26:30- A Scientist’s Motivation: Wonder, Curiosity & the Role of Beauty 02:29:52- Credits Greatest Mysteries of Gravity | Brian Greene & Kip Thorne    / @worldsciencefestival