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Universe expanded faster than the speed of light during inflation

  1. Jul 15, 2010 #1
    How is it possible that the universe expanded faster than the speed of light during inflation when this is the "cosmic speed limit"?
     
  2. jcsd
  3. Jul 15, 2010 #2
    Re: Inflation

    The speed-limit means that nothing (i.e. no information) can travel THROUGH SPACE faster than the speed of light. During inflation, space (more accurately space-time) ITSELF was expanding.

    Another way to think about it is: in no local region of space-time, was anything moving faster than the speed of light. Only in comparing very distantly separated locations, was there a net motion greater than c.
     
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