Is gravity fundamental to the universe? Neil deGrasse Tyson and Chuck Nice explore quantum physics, the fourth dimension, whether H2O is water, and the many-worlds interpretation with theoretical cosmologist Janna Levin, PhD. Is space infinitely elastic? If spacetime is a particle at the smallest scales, is there space between spacetime? We get philosophical: is H2O water? We explore the quantization of space, Planck lengths, and whether gravity is an emergent feature of quantum physics. Is gravity a fundamental feature of the universe? What would you see in the earliest parts of the Big Bang? We explore how you could rewrite relativity as particle field theory and the geometry and topology of the universe. Learn about the time Einstein let his driver give a talk for him and how the 1919 eclipse changed physics forever. We break down the fourth dimension, compactifying space, and Lorentz boosts. Do physics and math view spacetime differently? Neil and Janna discuss the many-worlds interpretation and whether it’s trying to make classical sense of something non-classical. Plus, we explore how quantum teleportation would work. Is the universe in a superposition? Are black holes fundamental particles? Thanks to our Patrons Mikal Krane, Tramond Spencer, John R, Laura Morrison, Javier Mejia, Emilio Campín Ramírez de Arellano, Jeff Gauthier, Tom Jones, and Jaired H for supporting us this week. NOTE: StarTalk+ Patrons can listen to this entire episode commercial-free. Check out our second channel, @StarTalkPlus Get the NEW StarTalk book, 'To Infinity and Beyond: A Journey of Cosmic Discovery' on Amazon: https://amzn.to/3PL0NFn Support us on Patreon: https://www.patreon.com/startalkradio FOLLOW or SUBSCRIBE to StarTalk: Twitter: http://twitter.com/startalkradio Facebook: https://www.facebook.com/StarTalk Instagram: https://www.instagram.com/startalk About StarTalk: Science meets pop culture on StarTalk! Astrophysicist & Hayden Planetarium director Neil deGrasse Tyson, his comic co-hosts, guest celebrities & scientists discuss astronomy, physics, and everything else about life in the universe. Keep Looking Up! #StarTalk #neildegrassetyson 00:00 - Introduction: Janna Levin 5:12 - Astronomy in NYC 7:12 - Mind-Blowing Science 12:05 - Can There be Space Between Space? 15:00 - Is Gravity Fundamental? 18:10 - What Does a Planck Length Tells Us? 22:10 - Einstein’s Driver Giving a Lecture & 26:05 - The Topology of the Universe 30:25 - Lorentz Boost & Why is the Fourth Dimension Time? 35:30 - The Many Worlds Interpretation 42:22 - Black Hole’s Passage of Time 44:30 - Quantum Teleporting a Molecule 47:30 - Black Holes As Fundamental articles 48:50 - A Cosmic Perspective