1. Not finding help here? Sign up for a free 30min tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Radiation in universe

  1. Mar 22, 2006 #1


    User Avatar
    Gold Member

    (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


    User Avatar
    Staff Emeritus
    Science Advisor
    Gold Member

    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.
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?

Similar Discussions: Radiation in universe
  1. Radiation Universe (Replies: 1)

  2. The universe (Replies: 4)