Science & Futurism with Isaac Arthur

Cosmic strings may be ultra-thin defects in spacetime—relic “cracks” from the early universe. How we’d detect them, what they mean for physics, and how aliens might exploit them.

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Credits:
Cosmic Strings – Cracks in the Fabric of the Universe
Written, Produced & Narrated by: Isaac Arthur
Select imagery/video supplied by Getty Images

Chapters
0:00 Intro - Cracks in the Fabric of the Universe
6:11 From Defects to Cosmic Strings
13:31 Civilizations and Cosmic Strings: Tools, Traps, and Temptations
19:43 Nebula
20:39 Cousins, Confusions, and What a Discovery Would Mean

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Cosmic strings may be ultra-thin defects in spacetime—relic “cracks” from the early universe. How we’d detect them, what they mean for physics, and how aliens might exploit them.

Get Nebula using my link for 50% off an annual subscription: https://go.nebula.tv/isaacarthur
Watch my exclusive video Settling Saturn's Rings: https://nebula.tv/videos/isaacarthur-settling-saturns-rings-exploring-the-origins-resources-and-future-habitats-of-a-halo-world

🛒 SFIA Merchandise: https://isaac-arthur-shop.fourthwall.com/
🌐 Visit our Website: http://www.isaacarthur.net
❤️ Support us on Patreon: https://www.patreon.com/IsaacArthur
⭐ Support us on Subscribestar: https://www.subscribestar.com/isaac-arthur
👥 Facebook Group: https://www.facebook.com/groups/1583992725237264/
📣 Reddit Community: https://www.reddit.com/r/IsaacArthur/
🐦 Follow on Twitter / X: https://twitter.com/Isaac_A_Arthur
💬 SFIA Discord Server: https://discord.gg/53GAShE
Credits:
Cosmic Strings – Cracks in the Fabric of the Universe
Written, Produced & Narrated by: Isaac Arthur
Select imagery/video supplied by Getty Images

Chapters
0:00 Intro - Cracks in the Fabric of the Universe
6:11 From Defects to Cosmic Strings
13:31 Civilizations and Cosmic Strings: Tools, Traps, and Temptations
19:43 Nebula
20:39 Cousins, Confusions, and What a Discovery Would Mean

See Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.

Interstellar city-states may dominate future space travel, governing the laser highways that connect stars and shape galactic civilization.

Get Nebula using my link for 50% off an annual subscription: https://go.nebula.tv/isaacarthur
Watch my exclusive video Settling Saturn's Rings: https://nebula.tv/videos/isaacarthur-settling-saturns-rings-exploring-the-origins-resources-and-future-habitats-of-a-halo-world
Check out Practical Engineering: https://nebula.tv/videos/realengineering-the-anatomy-of-the-nokia-3310/?ref=isaacarthur

🛒 SFIA Merchandise: https://isaac-arthur-shop.fourthwall.com/
🌐 Visit our Website: http://www.isaacarthur.net
❤️ Support us on Patreon: https://www.patreon.com/IsaacArthur
⭐ Support us on Subscribestar: https://www.subscribestar.com/isaac-arthur
👥 Facebook Group: https://www.facebook.com/groups/1583992725237264/
📣 Reddit Community: https://www.reddit.com/r/IsaacArthur/
🐦 Follow on Twitter / X: https://twitter.com/Isaac_A_Arthur
💬 SFIA Discord Server: https://discord.gg/53GAShE
Credits:
Interstellar Banking - The Galactic Financial System
Produced & Narrated by: Isaac Arthur
Written & Edited by: Briana Brownell, Isaac Arthur, Merv Johnson II, Thomas Owens
Graphics from Jeremy Jozwik & Sergio Botero
Music Courtesy of Chris Zabriskie & Stellardrone
Select imagery/video supplied by Getty Images

Chapters
0:00 Intro
4:45 Foundations of Currency in Space
6:06 Commodity Money
8:47 Fiat Money
10:40 Crypto & Distributed Ledgers
12:09 Time Dilation, Distance, and the Death of Real-Time Banking
12:55 Interplanetary Banking
18:34 Interstellar Banking
19:50 Interstellar Banking (Light-Years Away)
22:56 Intergalactic & FTL Banking
25:09 Automation, AI, and Autonomous Banking
26:22 CT Scan
27:28 Cultural and Ethical Dimensions of Cosmic Wealth
28:45 The Economics of Forever

See Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.

Interstellar city-states may dominate future space travel, governing the laser highways that connect stars and shape galactic civilization.

Get Nebula using my link for 50% off an annual subscription: https://go.nebula.tv/isaacarthur
Watch my exclusive video Settling Saturn's Rings: https://nebula.tv/videos/isaacarthur-settling-saturns-rings-exploring-the-origins-resources-and-future-habitats-of-a-halo-world
Check out Practical Engineering: https://nebula.tv/videos/realengineering-the-anatomy-of-the-nokia-3310/?ref=isaacarthur

🛒 SFIA Merchandise: https://isaac-arthur-shop.fourthwall.com/
🌐 Visit our Website: http://www.isaacarthur.net
❤️ Support us on Patreon: https://www.patreon.com/IsaacArthur
⭐ Support us on Subscribestar: https://www.subscribestar.com/isaac-arthur
👥 Facebook Group: https://www.facebook.com/groups/1583992725237264/
📣 Reddit Community: https://www.reddit.com/r/IsaacArthur/
🐦 Follow on Twitter / X: https://twitter.com/Isaac_A_Arthur
💬 SFIA Discord Server: https://discord.gg/53GAShE
Credits:
Interstellar Banking - The Galactic Financial System
Produced & Narrated by: Isaac Arthur
Written & Edited by: Briana Brownell, Isaac Arthur, Merv Johnson II, Thomas Owens
Graphics from Jeremy Jozwik & Sergio Botero
Music Courtesy of Chris Zabriskie & Stellardrone
Select imagery/video supplied by Getty Images

Chapters
0:00 Intro
4:45 Foundations of Currency in Space
6:06 Commodity Money
8:47 Fiat Money
10:40 Crypto & Distributed Ledgers
12:09 Time Dilation, Distance, and the Death of Real-Time Banking
12:55 Interplanetary Banking
18:34 Interstellar Banking
19:50 Interstellar Banking (Light-Years Away)
22:56 Intergalactic & FTL Banking
25:09 Automation, AI, and Autonomous Banking
26:22 CT Scan
27:28 Cultural and Ethical Dimensions of Cosmic Wealth
28:45 The Economics of Forever

See Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.

Humanity may not colonize planets—we may build our own worlds. Explore how rotating space habitats could spread across the Solar System and beyond, forming a vast diaspora of artificial worlds that reshape civilization and interstellar expansion.

Get Nebula using my link for 50% off an annual subscription: https://go.nebula.tv/isaacarthur
Watch my exclusive video Settling Saturn's Rings: https://nebula.tv/videos/isaacarthur-settling-saturns-rings-exploring-the-origins-resources-and-future-habitats-of-a-halo-world

🛒 SFIA Merchandise: https://isaac-arthur-shop.fourthwall.com/
🌐 Visit our Website: http://www.isaacarthur.net
❤️ Support us on Patreon: https://www.patreon.com/IsaacArthur
⭐ Support us on Subscribestar: https://www.subscribestar.com/isaac-arthur
👥 Facebook Group: https://www.facebook.com/groups/1583992725237264/
📣 Reddit Community: https://www.reddit.com/r/IsaacArthur/
🐦 Follow on Twitter / X: https://twitter.com/Isaac_A_Arthur
💬 SFIA Discord Server: https://discord.gg/53GAShE
Credits:
The Space Habitat Diaspora – Humanity Spreads Without Planets
Written, Produced & Narrated by: Isaac Arthur
Graphics from Bryan Versteeg, Jeremy Jozwik, Sergio Botero, Udo Schroeter
Select imagery/video supplied by Getty Images
See Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.