THE VIDEO SHELF · faster-than-light travel
Superluminal Time Travel + Time Warp Challenge Answer
A PBS Space Time episode explaining why faster-than-light travel is equivalent to travelling back in time, using relativity and Minkowski diagrams for different observers.
Why HN readers recommended it
HN points to it in warp drive discussions as a math-free explanation of why superluminal travel causes causality problems.
This is a summary from the source dataset, not an endorsement by Hacker News or the video creator.
Video & recommendation details
- Creator / channel
- PBS Space Time
- Topic
- faster-than-light travel
- Format
- explainer
- Level
- general
- HN recommenders in dataset
- 2
- HN mentions in dataset
- 3
- Recommendation years in dataset
- 2018–2022
These counts and years describe the included Hacker News records; they are not YouTube views or the video’s publication date.
From the original HN conversations
Excerpts from the recorded comments. Follow each source for the full comment and surrounding discussion.
Here's a good (IMHO) video showing how this works out, by looking Minkowski diagrams for different observers. [VIDEO]
magicalhippo on Hacker News · 2018-08
In Alcubierre driveOne video with no maths required. [VIDEO] Without the math you can't get a deep understanding or reason about it too much but you can see the issue.
xupybd on Hacker News · 2022-07
In Breaking the warp barrier: solitons in Einstein–Maxwell-plasma theory (2021)
Summaries, classifications and recommendation records are from the HackerTube source dataset. Read about this library and its limitations.
