How Time Becomes Space Inside a Black Hole | Space Time
PBS Space Time4 HN recommenders · 2018–2025
2.5M views · explainer · evergreen · Uploaded 2017-03-30
A PBS Space Time episode explaining how space and time swap roles inside a black hole's event horizon. It is part of the channel's black hole series.
Recommended as the cleanest visual explanation of time and space switching roles past the horizon, and a gateway to the channel's black hole videos.
29:21TIMELAPSE OF THE FUTURE: A Journey to the End of Time (4K)
melodysheep
23:32The Solar Gravitational Lens will Map Exoplanets. Seriously.
Launch Pad Astronomy
22:49I bought 1000 meters of wire to settle a physics debate
AlphaPhoenix
9:01Powers of Ten™ (1977)
Eames Office
12:46The Speed of Light is NOT About Light
PBS Space Time
19:05Why No One Has Measured The Speed Of Light
Veritasium
1:04:52'A Universe From Nothing' by Lawrence Krauss, AAI 2009
Richard Dawkins Foundation for Reason & Science
56:04Richard Feynman - The.Character of Physical Law - Part 1 The Law of Gravitation (full version)
Tinkerin' Thinkers
7 comments from Hacker News
I just realized I was replying to the wrong parent comment! So sorry. I was talking about a PBS Space Time episode on YouTube I saw in (or came across via) a different comment. [VIDEO]
This is from PBS Spacetime series [1]. A fantastic channel, and they did a number of videos on black holes. [1] [VIDEO]
> ...at the same moment. As an aside, this is a rather funny phrase to be using about objects so massive that time and space actually switch roles inside their event horizons compared to the normal universe. I don't feel like I can explain it very well, but here is a video that does so: [VIDEO] (Skip to about 5:15 for the good stuff.)
[LINK] I hope it helps. I think this is the cleanest explanation with actual visual representation. Edit: Sorry this one is even better. How Time Becomes Space Inside a Black Hole | Space Time [VIDEO]
PBS Space Time to the rescue: What Happens at the Event Horizon? - [LINK] What’s On The Other Side Of A Black Hole? - [LINK] How Time Becomes Space Inside a Black Hole - [VIDEO] The Black Hole Information Paradox - [LINK]
Apologies for replying to my own post, but I should have included sources. Here is the best stuff I've found so far: [LINK] [LINK] [LINK] There is an episode of How the Universe Works (I think) where they talk about the multiverse looking like an infinite block of swiss cheese, and each black hole having a child universe inside with its own physics, sealed off from the parent universes. So we're in the black hole where the rules of physics allow us to exist to realize it. In other words, the multiverse used black holes to evolve the rules of physics until consciousness could exist. It's another interpretation of the anthropic principle so isn't really testable, but I thought it was elegant. Wish I could find it. Edit: some places to start: [VIDEO] [LINK]
What happens inside a black hole is basically unknowable. We can only ponder the math which leads to ideas like space and time swapping roles once you cross the event horizon.[0] The only thing that comes out is hawking radiation, which is sort of like... half of nothing. [0] [VIDEO]