I joined @PeterMcCormackShow to dig into one of physics' deepest unanswered questions: what is time, and why does it seem to move in only one direction? My answer might surprise you. Time may not be a fundamental feature of reality at all, and understanding space, matter, and energy still doesn't mean we understand the universe itself. We cover: - What may have existed before the Big Bang - Why something can't truly come from nothing - How my work with the Simons Observatory could detect gravitational waves from the universe's earliest moments - What dark matter actually means - Why even a film as detail-obsessed as Interstellar still gets the physics wrong. Chapters: 4:24 — Does Time Actually Exist? 8:14 — Why Interstellar Gets the Physics Wrong 18:10 — Can Something Really Come From Nothing? 29:21 — Science Never Proves Anything 32:12 — Is Dark Matter Just Made Up to Fix the Equations? 42:07 — How We Could See Before the Big Bang 52:17 — Mortality: Why Humans Know Life Is Precious 1:00:07 — Time Isn’t Scarce. Attention Is. 1:03:25 — UFOs, Disclosure & the Problem With “Belief” 1:16:29 — Why AI May Never Reach Superintelligence The conversation then turns from cosmic time to human time: mortality, family, meaning, and attention. We get into UFO disclosure, the collapse of institutional trust, and whether AI can ever reproduce the embodied human insight that let Einstein transform physics. My take: AI remains a tool built to serve humanity, and it's time we stop apologizing for humanity's greatness. ——— 📬 Get the transcript, fascinating bonus content, and my Monday M.A.G.I.C. Message: https://briankeating.com/yt 🌠 Have a .edu email and live in the USA 🇺🇸? You automatically win a meteorite: https://BrianKeating.com/edu 🔔 Subscribe: https://www.youtube.com/DrBrianKeating?sub_confirmation=1 🎯 Support Into the Impossible on Patreon — get my weekly M.A.G.I.C. Message, unfiltered bonus content, and live monthly Office Hours with me: https://www.patreon.com/drbriankeating ⭐ Join this channel for perks, monthly Office Hours, and your name in the Member Roster at the end of every episode: https://www.youtube.com/channel/UCmXH_moPhfkqCk6S3b9RWuw/join 📚 My books: Losing the Nobel Prize (memoir): http://amzn.to/2sa5UpA Think Like a Nobel Prize Winner: https://a.co/d/03ezQFu Focus Like a Nobel Prize Winner: https://a.co/d/hi50U9U Galileo's Dialogue (first-ever audiobook): https://a.co/d/iZPi9Un 🌐 More: 🏄‍♂️ Twitter: https://twitter.com/BrianKeating 📚 Substack https://briankeating.substack.com/ss ✍️ Blog: https://briankeating.com/blog 🎙️ Audio-only: https://briankeating.com/podcast #intotheimpossible #briankeating #science #physics #astronomy #cosmology #podcast #universe