Are We Living Inside a Black Hole?
By Rebecca Boyle Posted 07.23.2010 at 11:53 am 14 Comments

Black Hole Concept Wikimedia Commons

Scientists trying to explain the universe’s accelerating expansion usually point to dark energy, which seems to be pushing everything apart.

But an Indiana University professor has a new theory, reports New Scientist: We’re inside a black hole that exists in another universe. Specifically, a black hole that rebounded, somewhat like a spring.

Some fairly mind-blowing physics is involved here, but the gist is that Nikodem Poplawski of IU-Bloomington used a modified version of Einstein’s general relativity equation set that takes particle spin into account.

Including this variable makes it possible to calculate torsion, part of the geometry of space-time. It also gets rid of the black hole singularity, a phenomenon that general relativity cannot explain.

In a study published earlier this year, Poplawski said when the density of matter reaches epic proportions, torsion counters gravity. This prevents matter from compressing indefinitely to a singularity of infinite density. Instead, matter rebounds like a spring, and starts expanding again.

In Poplawski's latest study, his calculations show that space-time inside the black hole expands to about 1.4 times its smallest size in as little as 10-46 seconds -- two orders of magnitude faster, for lack of a better word, than the Planck time. This brisk bounce-back could have been what led to the expanding universe that we see today.

But here's the real kicker: as Poplawski says, we may not be living in our universe at all; we might be living inside a rebounded black hole that exists in a different universe.

We could tell by measuring the preferred direction of our universe. A spinning black hole would have imparted some spin to the space-time inside it, which would violate a law of symmetry that links space and time. This might explain why neutrinos oscillate between their antimatter and regular-matter states.

Are We Living Inside a Black Hole? | Popular Science

It's not a *new* idea as such, though maybe the detail has changed but I memo reading about these ideas years ago. (given the apparent explination for a point of infinate mass at the 'Big Bang')

But the questions in then raises are mind bloggling questions. Like if all the matter in our universe is fallout from another universe then just how massive is that universe? I mean we know we've got contless thousands of small blackholes and possibley thousands more supermassive ones in our universe. Assuming that we are in the blackhole of another universe just how many other blackholes are in it, each with their own probable universes (or atleast the matter for it.)

But that aside, it's is an amazing idea, and I'm sure it lends it's self well to the idea of the multiverse.

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