Thursday, April 8, 2010

Science Is Cool: Life in a Black Hole

this picture relates to the story in ways I don't entirely understand

Personally, I can't evaluate whether this theory is revolutionary or total crap, but it sure is cool!

Could our universe be located within the interior of a wormhole which itself is part of a black hole that lies within a much larger universe?

. . .

"This condition would be satisfied if our universe were the interior of a black hole existing in a bigger universe," he said. "Because Einstein's general theory of relativity does not choose a time orientation, if a black hole can form from the gravitational collapse of matter through an event horizon in the future then the reverse process is also possible. Such a process would describe an exploding white hole: matter emerging from an event horizon in the past, like the expanding universe."

A white hole is connected to a black hole by an Einstein-Rosen bridge (wormhole) and is hypothetically the time reversal of a black hole. Poplawski's paper suggests that all astrophysical black holes, not just Schwarzschild and Einstein-Rosen black holes, may have Einstein-Rosen bridges, each with a new universe inside that formed simultaneously with the black hole.

"From that it follows that our universe could have itself formed from inside a black hole existing inside another universe," he said.

My mind is officially blown.


  1. So where does the "life element" fit into all that? ::snerk::

  2. So, I was watching this documentary about black holes the other day and what I kept wondering was, you know how black holes pull things into them with their incredibly strong gravitational pull? Where does all the "stuff" go once it gets suck in?

    Does anybody know?

  3. Last I looked, nobody was entirely sure; IIRC, the dominant theory was "compressed into a tiny, super-dense speck". But I'm not up on current theories, so take that with a grain of salt.

  4. When I first read about this, it made complete sense. The problem of language that existed then still exists, however. If our "universe" is not all there is, then the definition of universe either has to change or our conception of the universe must.

  5. I'm by no means an expert on these areas of physics (I'm a mathematician not a physicist) but my understanding is that these sorts of scenarios generally require very unlikely topologies. This is the sort of thing where having a better understanding of 3-manifolds and of how to unite quantum mechanics and general relativity would probably help a lot.

    Fannie and Michael, regarding what happens to the mass: It depends. There's some disagreement as to whether black holes actually have a true singularity or not. If they do, things are very weird. If not, the mass just gets compressed down to a point so small that weird quantum effects take over.

  6. Michael Mock's got it right for the most part: after a neutron star is compressed into a black hole, there is no known force in the universe powerful enough to fight it's own gravitational pull: even a solid mass of directly-contacting neutrons can't stop it, so it keeps on getting crushed down into a smaller and smaller speck, indefinately.

    If I understand time-dilation correctly (no promises), it never actually reaches a singularity (at least, from our perspective): as it gets smaller, time goes slower, and it would take infinite time for it to be compressed into an infinite-small singularity.

    The whole theory of wormholes and other such weirdness comes from the idea of a rapidly rotating black hole, where the singularity falls into a ring rather than a speck (speed of rotation increases as it collapses, so centripetal force keeps it from speckifying). In theory, passing through this ring would drop you through the exact centre of the black holes absurdly deep gravitational well, and if Einstien was right than the space-time deformation of the well might cut through to somewhere else in the universe. Or a different one. Or the plane of infinite kittens.

  7. Heh heh: not for nothing did I pick the username "Quasar."

  8. Thanks James, Michael, and Joshua.


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