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Age of the universe

  1. Jan 14, 2010 #1
    Assuming it has only been recently discovered that the expanding universe is expanding at an accelerated rate, and assuming the calculation of the age and distances to galaxies has been based on the old rate of expansion. Does that not affect the estimate of how old the universe is? Does that not also affect the distances calculated?

    Is the accelerated expansion a constant acceleration? Or is it an accelerating acceleration?
  2. jcsd
  3. Jan 14, 2010 #2


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    It does not affect the age of the universe, only its size.
  4. Jan 20, 2010 #3
    The 13.7 billion year age quoted these days is based on the accelerated expansion effects being taken into account. Prof. Ned Wright, at UCLA, has an online calculator that lets you modify the variables and see the results...
    "[URL [Broken]
    Cosmology Calculator Lite[/URL]
    "[URL [Broken]
    Advanced Cosmology Calculator[/URL] ...lets you put in neutrino masses and other things.
    "[URL [Broken]
    Light Travel-time Calculator[/URL] ...usually the media quotes the light travel-time as the distance to very distant galaxies (which it's not.) This calculator lets you translate that into real cosmological distances.

    Not enough data yet to tell.
    Last edited by a moderator: May 4, 2017
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