Epochs of the Universe - The Cosmic Clock & Civilization

Explore the entire life story of the cosmos, from quantum flickers at the Big Bang to the distant eras of black holes and dark energy, and discover what kinds of civilizations might endure across these unimaginable spans of time. Watch my exclusive video Mass Drivers on the Moon: https://nebula.tv/videos/isaacarthur-... Get Nebula using my link for 40% off an annual subscription: https://go.nebula.tv/isaacarthur Get a Lifetime Membership to Nebula for only $300: https://go.nebula.tv/lifetime?ref=isa... Use the link https://gift.nebula.tv/isaacarthur to give a year of Nebula to a friend for just $36. Visit our Website: http://www.isaacarthur.net Join Nebula: https://go.nebula.tv/isaacarthur Support us on Patreon:   / isaacarthur   Support us on Subscribestar: https://www.subscribestar.com/isaac-a... Facebook Group:   / 1583992725237264   Reddit:   / isaacarthur   Twitter:   / isaac_a_arthur   on Twitter and RT our future content. SFIA Discord Server:   / discord   Credits: Spaceport Innovations - Designing the Next Generation of Launch Sites July 31, 2025; Episode 744 Written, Produced & Narrated by: Isaac Arthur Epochs of the Universe - The Cosmic Clock & Civilization (July 31, 2025) Recorded: June 2025 Written by: Isaac Arthur Editor: Lukas Konecny Select imagery/video supplied by Getty Images Music Courtesy of Epidemic Sound http://epidemicsound.com/creator Chapters 0:00 Intro 2:26 The T-Scale — Time, Terrifyingly Large and Small 8:25 The Grand Unification Epoch 10:30 The Inflationary Epoch 15:40 The Electroweak Epoch 17:41 The Quark Epoch 18:19 The Hadron Epoch 19:28 The Early Universe 22:52 The Stelliferous Era (T10–T14) 22:24 Into the Darkness (T15-T67) 31:56 The Sojourn 32:54 The Black Hole Era 36:55 The Dark Era 40:29 Final Fates: Cycles, Cracks, and Cosmic Cliffhangers