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Research suggests Big Bang may have taken place inside a black hole
401–410 of 647 posts
Re: Research suggests Big Bang may have taken place inside a black hole
#402I've read somewhere an article which posited that our 3D universe might be inside a 4D black hole. When you cross a black hole's event horizon, the radial coordinate becomes timelike, so you lose one degree of spatial freedom. Movement is still possible in the tangential directions however, so what you get is basically an N-1 dimensional universe. So maybe our 3D universe is actually matter that fell into a 4D black…
> When you cross a black hole's event horizon, the radial coordinate becomes timelike, so you lose one degree of spatial freedom. The second half is incorrect. Since the time coordinate becomes spacelike in turn you'll still have 3 spatial degrees of freedom. Dimensions can't just vanish if you believe that spacetime is a 4D Lorentzian manifold (as physicists do). Moreover, the singularity is not a place you can poke…
I don't think the spacetime swap idea is particularly well explained though? Like although it's sort of mathematically true, my impression was that it's not like time suddenly becomes a dimension you're moving in once inside the event horizon, just that spacetime is acting so weird because there's now a deliberate direction where one did not exist before.
Re: Research suggests Big Bang may have taken place inside a black hole
#403Earlier quoted context omitted.
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This is a good thing. This is where the economy surplus went. Not to 5 days of leisure for everyone. But to jobs that keep us occupied, engaged, and motivated but aren't strictly required. The alternative is just either starving everyone to death, except for a few elite and their slaves, or everyone being bored out of their minds and wondering what the point of life is.
If the solution is ever more manuscripts that solve no interesting problems and that nobody will ever read, let's find another solution.
Re: Research suggests Big Bang may have taken place inside a black hole
#404Interesting read, but even if we assume the author is correct, and the cosmos formed as a black hole in a larger universe, the question remains, how did this larger universe formed, then? Might just be impossible to know.
This theory is in the same space: https://en.wikipedia.org/wiki/Cosmological_natural_selection I don’t think it has a hypothesis for the origin, though
See also the recent HN discussion about Blowtorch Theory, which has roots in (but doesn’t necessitate) CNS
Re: Research suggests Big Bang may have taken place inside a black hole
#405Earlier quoted context omitted.
This is a good thing. This is where the economy surplus went. Not to 5 days of leisure for everyone. But to jobs that keep us occupied, engaged, and motivated but aren't strictly required. The alternative is just either starving everyone to death, except for a few elite and their slaves, or everyone being bored out of their minds and wondering what the point of life is.
If the solution is ever more manuscripts that solve no interesting problems and that nobody will ever read, let's find another solution.
Why would you assume someone would write the paper at all, if the problem was uninteresting?
Re: Research suggests Big Bang may have taken place inside a black hole
#406give us one free miracle and we'll explain the rest
Bertrand Russell is the pope
Re: Research suggests Big Bang may have taken place inside a black hole
#407Interesting read, but even if we assume the author is correct, and the cosmos formed as a black hole in a larger universe, the question remains, how did this larger universe formed, then? Might just be impossible to know.
if we assume the author is correct, it would cease to be a scientific endeavor.
I'd put it a bit differently, that it remains a scientific endeavor, but leaves us in the same predicament as we're in now, which is the difficult work of forming a scientific theory that can only be tested indirectly.
Re: Research suggests Big Bang may have taken place inside a black hole
#408Oh 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.
This is true almost by definition, and doesn’t tell us anything interesting about black holes.
Re: Research suggests Big Bang may have taken place inside a black hole
#409Oh 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…
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Re: Research suggests Big Bang may have taken place inside a black hole
#410Could a computer simulation also contain another universe, with virtual black holes that have universes?
Can a computer simulate itself?