We all live in … a brane?

Forget everything you thought you knew about cosmology.  Big bang?  Dark matter?  Gravitational force being so weak compared to the other forces?  Fooey i say.  There’s a competing theory that brings all this into question and said you don’t need any of that to explain the universe.  All you need is brane theory.  This isn’t necessarily new.  I’ve been reading bits and pieces about it for years.  But this particular article doesn’t go deep so your eyes don’t glaze over.  Plus it has a cool graphic :)

Proponents of branes propose that we are trapped in a thin membrane of space-time embedded in a much larger cosmos from which neither light nor energy –except gravity– can escape or enter and that  that “dark matter” is just the rest of the universe that we can’t see because light can’t escape from or enter into our membrane from the great bulk of the universe. And our membrane may be only one of many, all of which may warp, connect, and collide with one another in as many as 10 dimensions -a new frontier physicists call the “brane world.” Stephen Hawking, among others, envisions brane worlds perculating up out of the void, giving rise to whole new universes.

Only gravity can’t exist soley in a specific brane, but wanders where it will, leaking off our brane into what physicists call “the bulk” — the rest of space-time. Brane theory offer an fascinating and plausable explanation for why gravity is such a weakling: Maybe it’s not any weaker than the other forces, but just concentrated somewhere else in the bulk, or on another brane, providing the key to understanding the dark matter that makes up 90 % of our universe.

If our brane is but a small slice of a much larger cosmos, however, the “dark matter” might be nothing but ordinary matter trapped on another brane. Dark matter is no longer some mysterious unknown, but the force at the heart of the brane-brane interaction. With the brane model the universe goes through an eternal cosmic cycle over a vast timescale of attraction, bounce with a spread out bang, springing apart, and expansion until attraction (gravity) takes over again.Such a shadow world, Hawking speculated, might contain “shadow human beings wondering about the mass that seems to be missing from their world.”

There was no big bang

Several of the world’s leading cosmologists believe that we are but one of many universes. As yet, as we know, there is no evidence of there being other universes out there. Some versions of this theory suggest that there is at least one other universe very close to our own, separated perhaps bu a membrane as little as a millimeter away, which, if true, could be detectable by some energy or forces such as gravity leaking through.In fact, as predicted by brane theorists, this “leakage” could be responsible for the production of dark energy from a parallel universe, its influence felt in our own through its gravitational pull.

CERN may detect the existance of another universe

Orvut’s theory could explain the effect of dark matter where areas of the universe are heavier than they should be given everything that’s present. With their theory, the nagging problems surrounding the Big Bang (beginning from what, and caused how?) are replaced by an eternal cosmic cycle where dark energy is no longer a mysterious unknown quantity, but rather the very extra gravitational force that drives the universe to universe (brane-brane) interaction.

What Came Before the Big Bang?

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