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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

#173

I'm not a scientist or astrophysicist but i do believe in science, is it ok to believe that we as humans and all our scientific development still very very far from proving anything remotely close to how the universe got created? I feel this subject is for humanity in year 2600 to start discussing it. Scientist still can show their theories and search papers and i can't understand a shit but i don't believe in any th…

Science is a process, not a source of truth. It has a very practical lens, which is very utilitarian, does the knowledge and models allow for invention or prediction that works in our reality for some current need.

The assumption is, you never really know, but if the model in which the theory says X, is able to predict something in the future or some experiment for Y, than that model appears to better approximate reality. Or is that knowledge and model allowing us to now do something we could not before, etc.

Over time, it course corrects to improve its knowledge and models in ways that show better results for prediction or invention.

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

#174

Suggested hard sci-fi light reading: "Cosm" by Gregory Benford, 1999. A universe the size of a bowling ball created in a laboratory. The scientist responsible for it, keeping it safe and on the run from gvt spooks. They want to protect it for as long as it lasts, and since its time is as relative as its size, they won't have long to wait.

This sounds similar to Horton Hears a Who.

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

#175

Earlier quoted context omitted.

Darwinian logic requires a feedback loop. And because those universes are isolated then there’s no “incentive” of a universe to have more “offspring”?

There is a theory of cosmological evolution. The child universes have slightly different physical constants and universes that produce more black holes will leave behind more offspring universes so over many generations, the universes evolve toward parameters that favour black hole production.

That's what Blowtorch theory predicts, it notes three stages of black hole formation:

- direct collapse after the big bang. Those supermassive black holes now from the center of galaxies and are the earliest and simplest form of how universes reproduced

- stellar collapse, requires the formation of stars, but those can be much more plentyfull than previous supermassive direct collapse black holes, so many more universes will have those

- black holes created by technology. Since black holes are incredibly efficient at converting mass to energy, in a universe that has the capability to form intelligent life, this life will eventually find a way to harness black holes as an energy source. In doing so they would create even more tiny black holes (maybe to power spaceships?), so such universes would form the most offspring.

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

#176
post #61

Earlier quoted context omitted.

Why not? If you can't observe it, test it, and reproduce it, then it lies outside the realm of science and in the realm of belief. Until someone figures out a way to experimentally verify the big bang hypothesis (or any other explanation for the origin of the universe or what came "before"), it's entirely fair to attribute it to whatever you feel like, be it a god or anything else. There is no law of the universe tha…

Well, I think surely the entirely fair thing to do is to just admit we don't know rather than make any attribution or imply any possession of an answer to those questions?

Certainly, that's also perfectly fair. The thing to keep in mind is that some people derive utility from belief in some sort of creator, so ultimately it's an argument of values (specifically, you're looking to argue that people should prefer uncertainty to unprovable (but also undisprovable!) certainty).

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

#177
post #52

I speculate that the big bang is/was fueled by all the black holes that existed and will exist, like a huge cycle where all the energy sucked into black holes converges at the same point in time causing the big bang.

How do you deal with Hawking radiation?

flip the direction of time and hawking radiation ""creates"" mass/energy inside a black hole (overall mass/energy is conserved)

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

#178

Suggested hard sci-fi light reading: "Cosm" by Gregory Benford, 1999. A universe the size of a bowling ball created in a laboratory. The scientist responsible for it, keeping it safe and on the run from gvt spooks. They want to protect it for as long as it lasts, and since its time is as relative as its size, they won't have long to wait.

I seem to remember a similar Star Trek episode; DS9, IIRC.

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

#179

Ωₖ = 0.0007 ± 0.0019 (68% confidence level) If the universe is curved dark energy is still a problem because the expansion is getting faster and overcomes the current curvature bounds.

Expansion definitely creates some issues here, at longer time scales how do we deal with this?

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

#180

Oh I have so many questions on this topic. I've often wondered about this. I don't have any direct physics training, but it's something that felt really plausible after I learned that the mass of a black hole is linearly proportional to its swarzschild radius. As the size of the black hole goes up, its overall density must decrease. Combined with the other observation that our universe has uniform density at large sc…

Plug estimated mass of universe to your schwarzschild formula and be amazed how close it is to observable size of the universe.
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