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Faster than Light Speed? The Physics of the Warp Drive - Elias Most - 01/24/2025

Science fiction is full of spaceships capable of traveling at faster-than-light speed, but is a "warp drive" for traveling at these speeds even compatible with the laws of physics? Join us for a 30-minute lecture about the physics of such a device and what it would take to build it, followed by a panel Q&A consisting of several astrophysicists to answer your questions about astronomy and space science. Timestamps and description below: 00:00 Announcements 06:12 Introduction of Presenter 07:55 Warp Drive Presentation 52:10 Warp Drive Q&A 52:22 "Are you exceeding the local speed of light in your example?" 53:41 "What would happen with time dilation for the warp drive?" 54:52 "Currently, how fast can our spaceships travel?" 55:51 "Can one use higher dimensions to travel faster than light?" 56:59 "In your videos, are they in sync with each other?" 59:00 "If you're traveling at 99% speed of light next to a laser beam, how fast does it appear?" 1:01:16 Intermission 1:06:01 Q&A Panel Introductions 1:09:38 "How do you define the distance traveled by the spaceship?" 1:11:21 "Does a light ray perceive time? What defines its trajectory?" 1:16:30 "Do numerical relativity simulations take a long time to write? to run?" 1:21:01 "Can AI help accelerate the development of astrophysical simulations?" 1:25:21 "Would a warp drive be a smoother ride than a worm hole?" 1:26:18 "How would you use a planet's mass to power the warp drive?" 1:30:43 "Does a warp drive require a multiverse to operate?" 1:31:24 "How do we perceive the experience of traveling at these speeds?" 1:34:30 "What if you leave space time compressed after you travel through it?" 1:35:30 "Will light become redshifted from the warp bubble?" 1:36:13 "What is the farthest star on which we can do seismology?" 1:37:48 "Is mass lost when two black holes merge?" 1:40:24 "Have quantum computers revealed anything new about worm holes?" 1:42:14 "Tell us about the proposed Krasnikov Tube" 1:42:51 "Are passengers immune to the compressed spacetime from the warp bubble?" 1:44:16 "If you add too much energy to a warp drive, will you create a black hole?" 1:45:18 "What is the biggest star? How big is it?" 1:48:05 "Have any of the panelists been an advisor for a science fiction film?" 1:53:13 "What are some examples of bad science in films?" 2:01:43 Concluding Remarks Title: Faster than Light Speed? The Physics of the Warp Drive Lecturer: Elias Most Abstract: The vastness of space is so great that travel to the nearest star system requires tens of thousands of years using conventional rocket technology. However, the world of science fiction has many examples of ships capable of making this journey in hours or days by traveling at faster-than-light speeds. But are the "warp drives" necessary for achieving these speeds even compatible with the laws of physics as we know them? In this talk, I will discuss the physics of proposed warp drives in the context of Einstein’s equations of General Relativity. I will also comment on the intrinsic obstacles to creating such devices in practice. Cover Image Credit: DALL-E