Can humanity ever travel faster than light, or does every shortcut through spacetime break causality itself? We explore warp drives, wormholes, tachyons, and why the universe pushes back.

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Watch my exclusive video Nearby Supernovae: 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: The Physics of FTL Travel Written, Produced & Narrated by: Isaac Arthur Editor: Lukas Konecny Music Courtesy of Stellardrone & Chris Zabriskie Select imagery/video supplied by Getty Images Chapters 0:00 Intro 0:12 Faster Than Light Is the Wrong Question 4:18 Spacetime Engineering: Moving the Map Instead of the Ship 5:24 Warp Drives: Surfing Spacetime 11:46 Wormholes: Shortcuts with a Side of Time Travel 13:20 Hyperspace: Shortcuts Through the Bulk 15:11 Solitons: The Positive Energy Challenge 17:35 The Krasnikov Tube: Building a Star-Road 20:30 Natural Relativistic Loopholes: Cosmic Strings and Tipler Cylinders 25:05 Tachyons: The Simplest Way to Break Time 28:04 Vacuum & Time-Advance Effects: When Causality Bends, Just a Little 32:19 Quantum Red Herrings 35:42 Nebula 36:54 Why the Universe Pushes Back: Chronology Protection and Self-Defeating Physics.

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🌐 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:
The Physics of FTL Travel.
Written, Produced \& Narrated by: Isaac Arthur.
Editor: Lukas Konecny.
Music Courtesy of Stellardrone \& Chris Zabriskie.
Select imagery/video supplied by Getty Images.

Chapters.
0:00 Intro.
0:12 Faster Than Light Is the Wrong Question.
4:18 Spacetime Engineering: Moving the Map Instead of the Ship.
5:24 Warp Drives: Surfing Spacetime.
11:46 Wormholes: Shortcuts with a Side of Time Travel.
13:20 Hyperspace: Shortcuts Through the Bulk.
15:11 Solitons: The Positive Energy Challenge.
17:35 The Krasnikov Tube: Building a Star-Road.
20:30 Natural Relativistic Loopholes: Cosmic Strings and Tipler Cylinders.
25:05 Tachyons: The Simplest Way to Break Time.
28:04 Vacuum \& Time-Advance Effects: When Causality Bends, Just a Little.
32:19 Quantum Red Herrings.
35:42 Nebula.
36:54 Why the Universe Pushes Back: Chronology Protection and Self-Defeating Physics.