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Radiation in universe

  1. Mar 22, 2006 #1


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    (if) our universe is closed and finite, would it become (soaked) in radiation
    more readilly than an open infinite universe?
  2. jcsd
  3. Mar 22, 2006 #2


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    I don't think so, but one might naively expect an ordinary unity change in the radiation density in a finite universe with a small topological scale. If we were to see multiple images of objects, then clearly the simple 1/r^2 dilution wouldn't apply anymore.

    Also, a closed universe without dark energy would eventually lead to a contracting phase, near the end of which the universe would become radiation-dominated.
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