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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

    mathman

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    It depends on the geometry of the universe. 2-d analog: blow up a balloon and the surface can expand forever (unless it breaks).
     
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