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

White holes

  1. Mar 13, 2010 #1

    abomb365

    User Avatar

    If black holes usually form when stars collapse, how do white holes form?
     
    abomb365, Mar 13, 2010
  2. jcsd
    Phys.org - latest science and technology news stories on Phys.org
  3. Mar 13, 2010 #2

    Vanadium 50

    User Avatar
    Staff Emeritus
    Science Advisor
    Education Advisor

    Nobody has ever observed a white hole.
     
    Vanadium 50, Mar 13, 2010
  4. Mar 14, 2010 #3

    Chalnoth

    User Avatar
    Science Advisor

    A white hole is the time reverse of a black hole, and is thus forbidden due to the second law of thermodynamics.

    To put it another way, we aren't going to be seeing any white holes out there for the exact same reason that we won't see scrambled eggs unfry and hop back in a shell.
     
    Chalnoth, Mar 14, 2010
  5. Mar 15, 2010 #4

    Chronos

    User Avatar
    Science Advisor
    Gold Member

    Other universes? Seriously, there is no credible observational evidence of a white hole in this universe. That is the gold standard. Not everything that appears theoretically possible is known to physically exists in this universe.
     
    Chronos, Mar 15, 2010
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook