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What's the fastest space pulls apart from itself?

  1. Apr 24, 2008 #1
    Physics says no object moves faster than C. Physics allows for space itself, as the substrate for objects, to expand faster than C. My question is how much faster? 2 or 3 times C?

    ty.
     
  2. jcsd
  3. Apr 25, 2008 #2

    Nabeshin

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    I don't think there's a limit. Theoretically you could crank the dark energy "parameter" up on a hypothetical universe, and get it to expand infinitely fast.
     
  4. Apr 25, 2008 #3
    Ok, but given observation isn't there a current observed limit. If I recall correctly, any two objects seperated by a distance corresponding to a redshift of z=1.6 are moving away from one another at C. So what about objects at z=7 and up?
     
  5. Apr 26, 2008 #4
    Inflation is the best example, we're talking speed that makes most science fiction look weak by comparison.
     
  6. Apr 27, 2008 #5

    Chronos

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    There is no effective limit on the pace of expansion. It appears to have been very rapid in the early universe. Bear in mind, however, this assumes the redshift-distance relationship is valid [which is a fairly safe assumption].
     
  7. Apr 28, 2008 #6
    Chronos, what limit would you guesstimate based on current observations?
     
  8. Apr 29, 2008 #7

    Chronos

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    1000x speed of light.
     
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