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B Blackhole and reversible time

  1. Oct 21, 2016 #1
    When somebody crosses the horizon of a blackhole, the person would have the privilege to travel backwards in time (as shown in the movie 'Interstellar'). What are the possiblities of such a person to even survive after getting in a blackhole, and how does he even able to travel in the past. Time travel in the future can definitely be considered due to relativity. Relativity also shows how can time be reversed, but how does a blackhole cause time to be reversed? Can somebody explain me please?
  2. jcsd
  3. Oct 21, 2016 #2


    Staff: Mentor

    No, they wouldn't. Movies are not good references for actual science.

    It does? Please give a reference.

    It doesn't.
  4. Oct 22, 2016 #3


    User Avatar
    Science Advisor

    Assuming that the radiation environment doesn't fry you, you can survive crossing the event horizon of a sufficiently massive black hole. It's the tidal gravity that rips you apart, and that gets weaker for a larger hole. However, after that, all paths lead to the singularity and you will be shredded at some point.
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