Guy falling into black hole sees end of universe

In summary, the distant observer sees the infaller as approaching the event horizon but never actually reaching it due to time dilation. The infaller does not see the end of the universe, as light from outside events cannot reach them before they reach the central singularity. This is explained in more detail in a paper linked above.
  • #1
black hole 123
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I still don't 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?
 
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  • #2
black hole 123 said:
What EXACTLY does the guy falling in see?

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.
 
  • #3
black hole 123 said:
I still don't 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)?

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
 

Related to Guy falling into black hole sees end of universe

1. What happens to a person who falls into a black hole?

When a person falls into a black hole, they experience a phenomenon known as "spaghettification." This means that the immense gravitational pull of the black hole causes their body to stretch and elongate until they eventually reach the singularity at the center of the black hole.

2. Can a person see the end of the universe while falling into a black hole?

No, it is not possible for a person to see the end of the universe while falling into a black hole. The intense gravitational forces inside the black hole prevent any light or information from escaping, so the person would be unable to see anything outside of the black hole.

3. Would a person falling into a black hole experience time dilation?

Yes, a person falling into a black hole would experience time dilation. This is due to the extreme gravitational pull of the black hole, which causes time to slow down for the person as they approach the singularity.

4. What would happen to the person's body as they approach the singularity?

As the person approaches the singularity at the center of the black hole, their body would be stretched and compressed due to the intense gravitational forces. Eventually, their body would be torn apart as they reach the singularity.

5. Is it possible to escape a black hole once inside?

No, it is not possible to escape a black hole once inside. The gravitational pull is so strong that even light cannot escape, making it impossible for any object to escape the black hole's event horizon once it has crossed it.

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