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Thread: Universe warping?

  1. #1 Universe warping? 
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    Could it be possible that the universe we live in is inside a black hole, and the universe is warped inside of it?


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  3. #2  
    Genius Duck Dywyddyr's Avatar
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    Possible?
    Sure, in some weid unscientific way.
    (Black holes don't generally expand at an accelerating rate).
    Since, almost by definition, we could never know or ever find evidence, it's a moot point...


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  4. #3  
    Life-Size Nanoputian Flick Montana's Avatar
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    I've heard this idea before, but I'm too much of a layman to give you any real feedback about it.
    "Sometimes I think the surest sign that intelligent life exists elsewhere in the universe is that none of it has tried to contact us." -Calvin
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  5. #4  
    Bullshit Intolerant PhDemon's Avatar
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    Sure, it's possible1, but until you present some evidence supporting your completely random unusual idea it isn't worth considering as a serious possibility.

    1. Although HIGHLY improbable.

    EDIT: 'kin' 'ell ninja'd twice! You guys are quick on the draw today...
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  6. #5  
    Forum Cosmic Wizard
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    Quote Originally Posted by the_kid_who_dreamed View Post
    Could it be possible that the universe we live in is inside a black hole, and the universe is warped inside of it?
    You might be better thinking of it as a white hole which would be the inside of a black hole.
    Yes there has been some research on it but as far as I know it is not testable or even meaningfull at this time.
    Hopefully somebody familiar with the work of Nikodem Paplowski will comment on this.
    Are We Living in a Black Hole?
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  7. #6  
    Quagma SpeedFreek's Avatar
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    Here is a good article on the subject:

    Is the Big Bang a black hole?
    "Ok, brain let's get things straight. You don't like me, and I don't like you, so let's do this so I can go back to killing you with beer." - Homer
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  8. #7  
    Malignant Pimple shlunka's Avatar
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    Are you insinuating that the entirety of the universe is some sort of wood?
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  9. #8  
    Moderator Moderator Markus Hanke's Avatar
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    Quote Originally Posted by SpeedFreek View Post
    Here is a good article on the subject:

    Is the Big Bang a black hole?
    I usually really like Baez's pages, but this is one example where I think he has completely missed the mark, in fact, a case can be made to say that he is quite simply wrong in what he writes there. Firstly, to the best of my knowledge, "white hole" solutions of the type required to model the behaviour of the universe after the BB occur only in Kerr-Newman spacetimes and their special sub-cases ( Kerr, Schwarzschild, and Reissner-Nordstroem ), but they do not occur in FLRW spacetimes such as the one the BBT is based on. Secondly, the geometry of spacetime in the vicinity of the BB is fundamentally different from the geometry of a black hole or white hole : for the former, Ricci curvature is very large whereas Weyl curvature is small or zero, whereas for the latter the situation is exactly reversed ( Ricci curvature is identically zero, whereas Weyl curvature is not ).

    Considering these two rather fundamental objections, I would argue that the BB being a "white hole" is not a physically viable hypothesis - so I disagree with Baez on this.
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