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–… SFIA Merchandise: https://isaac-arthur-shop.fourthwall… 🌐 Visit our Website: http://www.isaacarthur.net ❤️ Support us on Patreon: / isaacarthur ⭐ Support us on Subscribestar: https://www.subscribestar.com/isaac-a… 👥 Facebook Group: / 1,583,992,725,237,264 📣 Reddit Community: / isaacarthur 🐦 Follow on Twitter / X: / isaac_a_arthur 💬 SFIA Discord Server: / discord 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.

🛒 SFIA Merchandise: https://isaac-arthur-shop.fourthwall…
🌐 Visit our Website: http://www.isaacarthur.net.
❤️ Support us on Patreon: / isaacarthur.
⭐ Support us on Subscribestar: https://www.subscribestar.com/isaac-a…
👥 Facebook Group: / 1583992725237264
📣 Reddit Community: / isaacarthur.
🐦 Follow on Twitter / X: / isaac_a_arthur.
💬 SFIA Discord Server: / discord.
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.