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What would the largest anti-matter object be?

  1. Jun 5, 2007 #1
    Any suggestions to what the largest anti-matter object would be?

    Would it be just anti-particles, or would it be anti-hydrogen, or anti-carbon, larger anti-atoms, or multiple anti-atom object, or anti-one_kilogram object, or anti-planet,
    or antistar, or anti-galaxy, or anti-cluster, or anti-universe?
     
  2. jcsd
  3. Jun 5, 2007 #2

    mathman

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    It could be any of the items proposed. However, as far as actual existence is concerned, there isn't any evidence of any anti-matter except at the particle level or anti-hydrogen (created in laboratories).
     
  4. Jun 5, 2007 #3

    DaveC426913

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    There are wild speculations that segments of the universe could contain whole antimatter galaxies. We wouldn't know it since photons are matter-antimatter agnostic.

    But it is exceedingly unlikely.
     
  5. Jun 6, 2007 #4

    mathman

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    Immediately after the big bang, the universe was much more crowded, so it is highly unlikely that anti-matter could have been segregated from matter.
     
  6. Jun 7, 2007 #5
    I think the segregation is supposed to have occured during rapid inflationary epochs
     
  7. Jun 7, 2007 #6

    mathman

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    Thigs were flying around so fast, it is hard to see that anything could segregate.
     
  8. Jun 8, 2007 #7

    Chronos

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    It is highly unlikely macroscopic amounts of anti-matter [more than atomic particle sized] exist within our universe. There is no viable mechanism explaining how they became segregated. Were they not segregated, life on earth would be difficult to explain. This is a fairly significant mystery in any cosmological model. There is no mechanism to explain the disparity, but an abundance of evidence exists suggesting the disparity is real.
     
  9. Oct 18, 2007 #8
    nearly impossible for there to be large ammounts of anitmatter.
     
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