Entering a Black Hole, What would You See?

[rolandcuthbert]

What about the theory that time becomes so dilated that the astronaut sees the black hole disappear. And when he looked around, he would noticed that the universe is gone.

[jason]

If he doesn’t turn to spaghetti first going to be a point where everything turns black for him. He wouldn’t be able to see light once he’s passed a certain marker.

[rickpontificates]

Life is about irony.. you drive on a parkway, park on a driveway, and events STOP at the "event horizon"

[NoEggu]

I understand that this was just an illustration, but please note the following:

It would not appear that the astronaut never enters the black hole.

Once the astronaut passes the black hole's event horizon, no light reflecting off of him would escape the gravity of the black hole. So you would see the astronaut disappear.

The same as when we look at a black hole, we see nothing. That does not mean nothing has fallen in. Whatever matter fell in, will never be visible.

Next, the astronaut would be vaporized, long before he would reach the event horizon.

The gravity at that proximity to the black hole would be more than 1, 000, 000, 000, 000 times the gravity of the Earth.

Also note that black holes are not empty. They are not magical conduits to La La land.

We call them holes, with the adjective "black", because they look like holes, and since no light from its surface can be seen, it is black.

Contained within a black hole is an unimaginable amount of mass (or stuff). That is why it has such unimaginable gravity. More stuff = more gravity.

Our sun contains 98% of everything in our solar system. That includes all of the planets, asteroids, comets, meteors, rocks, etc. And our Sun is a small star.

Well, a small black hole has more than 1, 000, 000 times the mass of our sun. That's a lot of stuff.

The heat inside a black hole is off the charts. But gravity does not let it escape.

The stuff inside the black hole is compacted so tightly by gravity, that it is likely no bigger than a marble. Seems implausible. But it is so heavy, that everything is crushed down to that size.

Black holes are basically stars that are so huge that their own gravity crushes themselves. But the stuff that made up that crushed star is all in there.

[Jo_]

Wouldn't time pass so much fast compared to the astronaut that a super advanced civilization would rescue him a few seconds after he falls?

[abelmedina]

You would see him dim into nothingness though, the last photons before the event horizon don't just keep streaming towards you.

[stuartwiner]

Doesn't time slow down near super-massive objects? He might not sense it, but it's my understanding that time would be pass extremely slowly compared to the distant observer. If I am wrong, please explain. Thx.

[MrHominidU]

It isn't a photon issue. If you could see the falling guy his progress would appear to you to slow to a stop because of time dilation, he'd never reach the event horizon. But to him it would seem he continues to fall and if he could look out at the universe he'd see stars move and go through their sequences.

[Systox]

Why would the color of the light for the astronaut shift to blue if he speeds up the same amount?

[PolyGroove]

But if the astronaut could see the observer, he’s probably was aging so fast because of the extreme time dilation

[Blank-nc]

You would stretch and disintegrate if you enter into black hole from far far away galaxies 🌌 so don’t go near them

[spaceman]

Dr. Ash mentioned that the light entering the black hole behind the in-falling astronaut would be intensely blue-shifted to X-rays and gamma rays. Not only would the astronaut not be able to see out of the black hole, but would suffer painful radiation burns, as well. However, he would not live long enough to go through the horrors of radiation sickness.

[bradwilcox]

Something I've wondered about is how massive a black hole would need to be for the time dilation to be extreme enough to see the heat death of the universe by the time you passed through the event horizon.

[joesimon]

You'd be ripped apart and completely converted to pure energy and just be part of tge accretion disc

[istenme]

I don’t think the extreme blueshifting of light from the outside applies to him when he is in free fall. Please explain.

[patriciathomas]

So light that can not escape the event horizon of black hole or photons would still be photons of light and the person entering black hole still would have light? Ty

[rya]

false information. How can somebody explain blackholes w/o using relativity? Times stops at the event horizon from the perspective of an outsider. So the outsider cant see him because of time contraction, not because of dopler. For the person failing into the blackhole, he will probably pass the event when there is no more universe outside. In other words, the event is the end of the universe, as the compatification of higher dimension at plank levels is the begining of it.

[davidtavener]

If time stops at the event horizon from an external viewer’s perspective, wouldn’t we be able to see everything that ever fell into the black hole?

[waxl]

so far no one has ever drop black holes

[axa.axa.]

Then why wouldn't you see the astronaut disappear...