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Accelerating expansion

  1. Feb 28, 2009 #1
    I recently read that there is apparently a repulsive force that acts over very long distances that is causing the expansion of the universe to accelerate. I was just wondering if there is any data that disprove the possibility that the big bang was not a singular event and that rather than being driven away by a repulsive force, the matter at the edge of the observable universe might not be getting drawn towards matter that is still farther away that had its origins in a preceding big bang. Is there some reason that we know this is not possible?
  2. jcsd
  3. Feb 28, 2009 #2
    No guarantee that the big bang and inflation even happened..... just a theory with a lot of supporting evidence that appears to confirm the theory. I've never seen a plausible nor implausiable theory that matches your hypothesis....
  4. Mar 1, 2009 #3


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    This has been looked into, and the implications are, frankly, absurd. It requires that we have a local underdensity by a factor of about a hundred from the surroundings compared to stuff just a few billion light years out.
    Here's a recent paper that looked into this:
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