Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Universal Regeneration

  1. Mar 14, 2006 #1
    Is it possible that maybe the universe always expands in the same phsical place every time it expands, after collapse?
    Or is the only viable theory that the universe floats through empty space?
    I know this is a dumb question, but please, any insight is useful.
     
  2. jcsd
  3. Mar 16, 2006 #2

    SpaceTiger

    User Avatar
    Staff Emeritus
    Science Advisor
    Gold Member

    The universe just is, we don't usually embed it in a higher dimensional space. The empty space around us is part of the universe.
     
  4. Mar 16, 2006 #3
    Do you mean with empty space a free space that can be occupied or do you mean: empty space = nothing ?
    tks
     
  5. Mar 16, 2006 #4

    SpaceTiger

    User Avatar
    Staff Emeritus
    Science Advisor
    Gold Member

    I mean the vacuum, which, in QFT, is most certainly something.
     
  6. Mar 17, 2006 #5
    As the universe is not infinite what is there after the "something"?
     
  7. Mar 17, 2006 #6

    russ_watters

    User Avatar

    Staff: Mentor

    There doesn't need to be anything else out there - not even some "emptiness" - for the universe to be finite. It doesn't need a boundary. Consider the surface of a sphere: it has no boundaries, yet is finite.
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?



Similar Discussions: Universal Regeneration
  1. The universe. (Replies: 19)

  2. The Universe (Replies: 15)

Loading...