1. Limited time only! Sign up for a free 30min personal 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!

Can a closed universe expand forever?

  1. Nov 10, 2013 #1
    Most say that a closed universe would collapse. Recent observations show that the universe will probably keep on expanding forever. Does this mean we cannot live in a closed universe? Or, is there a loop hole which allows a closed universe to expand forever?
  2. jcsd
  3. Nov 10, 2013 #2


    User Avatar
    Science Advisor

    It depends on the geometry of the universe. 2-d analog: blow up a balloon and the surface can expand forever (unless it breaks).
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook