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

Guy falling into black hole sees end of universe

  1. May 14, 2015 #1
    I still dont understand this fully. Can someone please explain? I saw a video where an analogy was made, the distant observer is like an accelerating observer in flat spacetime and guy falling in is like an inertial observer, is it just like the coordinates of the distant observer from the black hole only covers up to the horizon (but not including the horizon itself)?

    What EXACTLY does the guy falling in see?
     
  2. jcsd
  3. May 14, 2015 #2

    PeterDonis

    User Avatar
    2016 Award

    Staff: Mentor

    He doesn't see the end of the universe. Light from outside coming in has to catch him before he hits the singularity; only light emitted a fairly short time after he falls in can do that.
     
  4. May 14, 2015 #3

    Nugatory

    User Avatar

    Staff: Mentor

    Either the video is wrong or you've misunderstood it.

    The infaller does not get to see the end of the universe or anything of that sort. He falls through the event horizon without anything remarkable happening and dies horribly but quickly when he reaches the central singularity. Light from events happening in the outside universe also moves through the horizon to the central singularity; if that light doesn't reach the infaller before he dies, he doesn't see those events.

    You might want to give this paper a try: http://arxiv.org/abs/0804.3619
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook




Similar Discussions: Guy falling into black hole sees end of universe
  1. Falling into black hole (Replies: 24)

Loading...