Black Holes Are Even Weirder Than You Imagined | Hacker News Reader

Black Holes Are Even Weirder Than You Imagined

newyorker.com

56 pointsjyunwai22 comments

If anyone is interested in the history and an accessible, but deep understanding of black holes I highly recommend Kip Thorne’s book “Black Holes and Time Warps” (1994). The first half of this article follows a summary of that book closely.

Kip Thorne was also in charge of the science of Interstellar (2014 movie).

He even wrote a book called The Science of Interstellar.

Also he won the Nobel Prize in Physics.

Very smart man!

He also coauthored one of the classic textbooks on general relativity, [Gravitation][1].

[1]: https://en.wikipedia.org/wiki/Gravitation_(book)

If anyone's keen to go deeper and catch up on the latest thought on such things it's not to late to slide into the Seventeenth Marcel Grossmann Meeting, Pescara, Italy (7-12 July 2024).

https://indico.icranet.org/event/8/

    Sergiu Klainerman: The nonlinear stability of slowly rotating Kerr black holes

    The full proof of the nonlinear stability of Kerr consists of  five papers, three written in collaboration with Jeremie Szeftel, one in collaboration  with Elena and Jeremie Szeftel  and another supporting paper authored  by Dawei Shen.

    In my lecture I will  describe the main architecture of the proof as well as some of the most important consequences.

https://web.archive.org/web/20240330165204/https://www.newyo...

https://archive.today/NHrhw

Sure, but this doesn't actually talk about things like them having shadows around them, or evaporating, or having a "photon sphere" where light orbits, or how you'll never see anything actually fall in because of the time dilation.

Unless you want to read a long form novel of low to moderate quality, you are probably better off reading https://en.wikipedia.org/wiki/Black_hole . Even the pictures there are better.

Seems like a puff piece with nothing particular new or something you wouldn't find on wikipedia

Don’t think “puff piece” is the phrase you’re after here. Also, the novelty of the information might be relative to the source/reader?

Agreed. the information in the article appears to be new to someone who has literally never heard about black holes... a 5 year old perhaps.

don't you know HNers are astrophysics experts? they always list their theories about the cutting edge in comment threads lmao

It’s the New Yorker. The audience is not universally familiar with the topic.

Our universe lives inside the singularity of a black hole. Each black hole has another universe inside it. The reason our universe is expanding is because our parent black hole is undergoing hawking radiation which stretches the fabric of our universe.

I think so too on everything but why is our universe stretching. If our universe started at a point, wouldnt that corelate of formation of blackhole - also at a point? Wouldnt stretching our universe mean the blackhole is actually growing? A lot of matter feeding a blackhole shortly after it forms would explain our rapid inflation.

But at the same time, once our universe stretches so fast that each photon is receding from all other photons faster than speed of light (completely isolate it from the rest of the universe), it fits into my analogy of escaping our universe and it being emited (trough hawking radiation) from the black hole. In that case growing our universe to infinity (and asymptotically reaching zero density) would fit into blackhole evaporating, so I just dont know.

I read this idea many years ago (on this site) that really piqued my curiosity. The idea was that the universe is the inside of a black hole backwards in time, that is, that the big bang is the final evaporation and the heat death is the birth of it, and that our experiences inside it are what one would expect to experience inside a black hole but backwards in time. I forget the details, I wish I could still find it.

But there are black holes in our universe. Can black holes be inside black holes?

Wouldn't that just be our view of another universe? And some universe out there sees our universe as a black hole?

It's hard to imagine a fixed limit on how far deep this pattern can go. The multiverse theory suggests that all possibilities exist at the same time in an infinite number of universes.

Can universes have circular references to other universes? A is a black hole in B, B is a black hole in C, and C is a black hole in A?

I have no idea about any of this but it's fun to think about.

It is black holes all the way down.

This is probably better phrased as a popular emerging theory, rather than the matter of fact tone used here.

I think exactly the same. It is odd that this is not an established consensus.

Why should this conjecture be an established consensus?

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