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Research suggests Big Bang may have taken place inside a black hole

port.ac.uk

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Re: Research suggests Big Bang may have taken place inside a black hole

#71

Post by n2d4 »

carbocation wrote: post #24

I think it's neat that this summary is written by an author of the scientific manuscript. Oversimplification is a risk, but this approach eliminates the possibility that the writer did not understand the underlying science.

Yea, and it was a great read too. I wish more researchers would publish blog posts alongside their technical whitepapers, although I acknowledge that not everyone involved in science has or wishes to acquire the skills needed to write blog-form content.

(I'd also be worried about a world where researchers are evaluated based on the virality of their blog posts, vs. how impactful their work was.)

Re: Research suggests Big Bang may have taken place inside a black hole

#72

Post by [deleted] »

twodave wrote: post #51
bmacho wrote: post #25

> The Big Bang is often described as the explosive birth of the universe – a singular moment when space, time and matter sprang into existence. It is indeed "often described" in the media as such. However, that is _not_ the currently accepted theory. "What if there were no space and time before the Big Bang" is just Stephen Hawking's pet theory.

Might as well believe in God if you’re going to believe in spontaneous accidental creation…

[deleted]

Re: Research suggests Big Bang may have taken place inside a black hole

#73

Post by gjsman-1000 »

tengwar2 wrote: post #68
gjsman-1000 wrote: post #57

Earlier quoted context omitted.

[flagged]

How so? If you attribute it to an earlier universe, you are just pushing the problem further back. It doesn't seem to be a proof or even a mild indication.

The universe casually didn't follow the laws of physics immediately after the Big Bang, an improbable event directly after an improbable event. No explanation has been found, even according to CERN, why everything that was created was not spontaneously annihilated. Attributing that to a divine intervention is the most probable explanation. CERN attributing this to "Some unknown entity" is humorous.

One theory (which CERN is using) is to argue that almost all matter was destroyed, and that the current observable universe is merely the tiny leftover due to slight differences in behavior, making the Big Bang look more like the Ludicrous Bang. This, of course, just contributes to religious snickering at how all problems are solved by adding another billion years to the timeline, over and over.

https://home.cern/science/physics/matter-antimatter-asymmetr...

Edit to reply: They behave differently; but why there is more of one than the other, remains unexplained; as regardless of how they behave, both should have been initially created in equal numbers. As for Sabine Hossenfelder's quote, that's a religious-faith level cop-out. When science requires faith, should it not be treated as a religion?

Re: Research suggests Big Bang may have taken place inside a black hole

#74

Post by exe34 »

colechristensen wrote: post #9
jjallen wrote: post #4

What if it wasn't the beginning of our universe or wasn't the beginning of everything, including what is probably outside of our universe?

Eh, the thing about the statement there is you're redefining "universe", which is fine, but restating a definition isn't really saying anything new. The literal meaning of "universe" especially with respect to the Latin origins is... well... everything. It may make sense for physics to separate in to separate sets of everything if there's some reasonable justification.

There's the Universe (everything everywhere everywhen), and then there's the observable universe. Most testable theories will be referring to the observable universe.

Re: Research suggests Big Bang may have taken place inside a black hole

#75

Post by physix »

I think this is a great summary. It's quite intuitive and elegant. Does anyone have any information about what the author's peers think of this model?

I'd love the idea that we are living inside a black hole, which is inside a black hole, which is inside a ...

Re: Research suggests Big Bang may have taken place inside a black hole

#76

Post by emigre »

layer8 wrote: post #49
emigre wrote: post #26

Earlier quoted context omitted.

"Objection, your honor. In the many-worlds interpretation there is a world in which that happened."

Many-worlds doesn’t predict that everything happens somewhere; far from it.

Well, it's just a joke. :) It doesn't necessarily have to make a lot of sense.

In any case, I find your comment very interesting. I'm studying quantum computing at the moment, and I've had to read the different interpretations of quantum mechanics, including Everett's many-worlds interpretation. As a non-physicist, I've found the different interpretations fascinating.

The many-worlds one, as far as I understood it, says that all the possible outcomes of a quantum measurement actually "happen" in different worlds. I have the impression that you would be able to give a much better explanation.

In any case, in the joke the gun is shot in the macro world, not in a quantum state. It's possible that it is a quantum gun, but probably not.

Let's say "overruled" then.

Re: Research suggests Big Bang may have taken place inside a black hole

#77

Post by xorokongo »

Kranar wrote: post #64
xorokongo wrote: post #17

Earlier quoted context omitted.

Than why do we need a beginning if there was always something.

Strictly speaking, modern cosmology does not treat the Big Bang as the beginning of all of existence, it's what happens when you take observations about large scale cosmology and run them backwards in time. Based on the information we have available about our universe, we can't make predictions or formally model anything prior to a certain point in time, consequently it's convenient to treat this moment as the earlie…

Thank you for your insightful response.

Re: Research suggests Big Bang may have taken place inside a black hole

#79

Post by RS-232 »

Not many people these days like to hear this (I myself was one of them), but the answer to this is in Genesis.

There's a reason some of the most famous mathematicians, scientists, engineers, and philosophers of all time believe(d) in God.

The Hebrew name of God, YHWH, literally means "He Who Is." In other words, the Self-Existent One. The father and originator of all things that were, are, and will be, who exists outside of spacetime.

Re: Research suggests Big Bang may have taken place inside a black hole

#80

Post by jl6 »

I didn’t understand whether the author is implying that this happens to all black holes or whether the model only applies in some circumstances.

I definitely didn’t understand whether this is suggesting that expanding universes can be contained within black holes that look like fixed-size finite objects from the outside.

And what happens to the inner universe when the parent black hole evaporates through Hawking radiation?

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