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Traveling to different Universes?

  1. Feb 15, 2005 #1
    Would there be anyway to theoretically travel through different universes? Let us say you went back in time (if it is possible) and altered history (let us say you somehow stupidly made the Axis powers win in WWII), would there be able to return to the timeline you came back from, maybe by using strings or whatever to travel to the infinite possible universes?
     
  2. jcsd
  3. Feb 15, 2005 #2
    using strings anything is possible !
     
  4. Feb 15, 2005 #3
    Not possible

    Many physicists believe that time has/is an arrow that points in the direction that we are traveling in now. Since they think this, they also think that is impossible to go back in time at all because we wouldn't be able to change the direction of the arrow. I'm really not sure though if one could use strings to travel to differant universes.
     
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