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Does age of Universe reveal its size?

  1. Feb 17, 2016 #1
    Does knowing the age of the universe (13.8 billion? ) say anything about size of the universe (besides the observable size)?
  2. jcsd
  3. Feb 17, 2016 #2


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    No. We know the size of the observable universe, but not what lies outside of our horizon. The size could be infinite.
  4. Feb 17, 2016 #3
    Is not knowing the size the reason we don't know if the expansion will ultimately end in a big crunch?
  5. Feb 17, 2016 #4


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    No. We now know that it will not.
  6. Feb 17, 2016 #5
    We are in the early stages of a dark energy dominated universe. The expansion rate will continue to get faster and faster. Whether the universe ends in a big rip, according to current models, is still an open question. It depends on the exact form of the dark energy equation of state.
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