Is the Universe on the outside or inside?

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Mind Bender
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Specifically, does our Universe exist on the inside "skin" of a bubble or the outside "skin" of a bubble? I'm sure this has something to do with M-Theory or brane cosmology, right? I'm curious.
 
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Mind Bender said:
Specifically, does our Universe exist on the inside "skin" of a bubble or the outside "skin" of a bubble? I'm sure this has something to do with M-Theory or brane cosmology, right? I'm curious.

I think in the normal cosmological model those are nonsensical concepts. There may be totally unverified hypotheses that posit some models in which those concepts have meaning, but I think of them as Science Fiction. They MAY become science fact, but not yet.
 

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