Black Holes....?

Question

I have been really curious about black holes recently and I just one to ask you guys what is inside or beyond a black hole and what would happened to a human that was to be sucked into one. Thanks..

Answer 1

A black hole is an object predicted by general relativity with a gravitational field so strong that nothing can escape it — not even light.

A black hole is defined to be a region of space-time where escape to the outside universe is impossible. The boundary of this region is a surface called the event horizon. This surface is not a physically tangible one, but merely a figurative concept of an imaginary boundary. Nothing can move from inside the event horizon to the outside, even briefly.

Let's suppose that you get into your spaceship and point it straight towards the million-solar-mass black hole in the center of our galaxy. (Actually, there's some debate about whether our galaxy contains a central black hole, but let's assume it does for the moment.) Starting from a long way away from the black hole, you just turn off your rockets and coast in. What happens?

At first, you don't feel any gravitational forces at all. Since you're in free fall, every part of your body and your spaceship is being pulled in the same way, and so you feel weightless. (This is exactly the same thing that happens to astronauts in Earth orbit: even though both astronauts and space shuttle are being pulled by the Earth's gravity, they don't feel any gravitational force because everything is being pulled in exactly the same way.) As you get closer and closer to the center of the hole, though, you start to feel "tidal" gravitational forces. Imagine that your feet are closer to the center than your head. The gravitational pull gets stronger as you get closer to the center of the hole, so your feet feel a stronger pull than your head does. As a result you feel "stretched." (This force is called a tidal force because it is exactly like the forces that cause tides on earth.) These tidal forces get more and more intense as you get closer to the center, and eventually they will rip you apart.

For a very large black hole like the one you're falling into, the tidal forces are not really noticeable until you get within about 600,000 kilometers of the center. Note that this is after you've crossed the horizon. If you were falling into a smaller black hole, say one that weighed as much as the Sun, tidal forces would start to make you quite uncomfortable when you were about 6000 kilometers away from the center, and you would have been torn apart by them long before you crossed the horizon. (That's why we decided to let you jump into a big black hole instead of a small one: we wanted you to survive at least until you got inside.)

What do you see as you are falling in? Surprisingly, you don't necessarily see anything particularly interesting. Images of faraway objects may be distorted in strange ways, since the black hole's gravity bends light, but that's about it. In particular, nothing special happens at the moment when you cross the horizon. Even after you've crossed the horizon, you can still see things on the outside: after all, the light from the things on the outside can still reach you. No one on the outside can see you, of course, since the light from you can't escape past the horizon.

How long does the whole process take? Well, of course, it depends on how far away you start from. Let's say you start at rest from a point whose distance from the singularity is ten times the black hole's radius. Then for a million-solar-mass black hole, it takes you about 8 minutes to reach the horizon. Once you've gotten that far, it takes you only another seven seconds to hit the singularity. By the way, this time scales with the size of the black hole, so if you'd jumped into a smaller black hole, your time of death would be that much sooner.

Once you've crossed the horizon, in your remaining seven seconds, you might panic and start to fire your rockets in a desperate attempt to avoid the singularity. Unfortunately, it's hopeless, since the singularity lies in your future, and there's no way to avoid your future. In fact, the harder you fire your rockets, the sooner you hit the singularity. It's best just to sit back and enjoy the ride.

Answer 2

Even though no one has been in a black hole, the mathematical necessities make some statemewnts possible.
The Schwarzchild radius, or event horizon, is the "point of no return". It's the distance from the center at which nothing, not even light can escape. Incidentally, though I've only seen this described in terms of light, it applies to all electromagnetic readiation.
Surrounding the event horizon matter which has been attracted by the Black Hole's gravitational field circles in what is called an accretion disc. Remember that a black hole is very very small in comparison to its mass. Matter that has been drawn to it has to "wait its turn" so to speak as matter that "got there first" spirals in past the event horizon

At the ultimate center of a black hole is what is called a "singularity" The best way to describe it is as a mathematical point that acts as though all the mass of the black hole is located there.

One problem with visualizing this is that we tend to think of black holes as "things" They aren't, really, in the sense that anything else in the universe is. Current concepts of gravity involve gravity being a bending of space-time, so that anything with mass creates a "gravity well" that other masses tend to fall to the bottom of----not fall down or into, but simply following the curvature of space-time. Viewed this way, a black hole isn't even in our universe, It has curved the fabric of space-time so deeply that it is pinched off. In a sense it is in a separate universe of its own creation, bordered by its event horizon,


Now, as far as our human's fate goes...Let's assume he's falling feet first into black hole. There would be such a strong difference that tidal forces would cause his feet to be sucked in much more strongly than his head. He would therefore be s-t-r-e-t-c-h-e-d way way out. Also, because all of him would be "falling in" towards the singularity, he would become thinner and thinner in the dirction of his feet, sort of like an exaggerated carrot shape. Then when he passed the event horizon he'd wink out of existence in any way we could detect. After that, it's anybody's guess, but I can't conceive of any way he could survive the stretching and squeezing., So I don't think I'll volunteer.

Answer 3

Black holes are developed after the death of a star like our own Sun. A Star when dying (Supernova) starts collapsing inside.....the mass and matter of sun explodes and collapses inside....the gravitational pull of such a body is so great that it pulls everything inside it and makes it to disintegrate once inside. Typically a black hole sucks in all the matter which is there in its gravitational pull. For example if our Sun explodes and becomes a black hole the planets of our solar system might get pulled inside the black hole. As the matter starts nearing black holes it starts to disintegrate due to excessive forces acting on them. There were theories which stated that the black holes were passage to other universes and solar system which have been proved wrong. Scientists currently working on black holes think that they are an important link in telling us about the birth of the universe.

Answer 4

there are many theories about the inside of black holes.
what happens to a human while being sucked in differs and depends on the black holes size.
while passing the so called 'event horizon' (the border below not even light can escape) you may notice the light more coming from above and if possible you may observe the entire lifespan of the universe in one go, since you are moving in a total different time-frame while entering
i think once you have passed this horizon you may have a chance to figure that you soon crash on a nucleus of serverly compressed matter.

Answer 5

No one really knows what's inside a black hole, our physics breaks down inside and can't deal with the singularity (center of the black hole). But if you were to be trapped by one and fall in, the immense gravity would tear you to pieces before you even reached the event horizon (point of no return).

Answer 6

well noone knows what is inside a black hole. but the gravity of a black hole is so strong that light doesnt even escape. let say you are floating in space right at the edge of a black hole. the edge of the black hole is called the event horizone. as the black hole pulls you in you start to stretch out like pulling a piece of taffy. the moleculkes inm your body start to come apart. eventually you are squeezed & stretched apart and sucked into the black hole. this is called singularity. once you are sucked in the black hole gives of a particle of radiation. to learn more about black holes i suggest reading stehpen hawking " the universe in a nutshell" this books explains quantum mechanis, relativity & many other things. it is very easyly explained & easy to follow along.

Answer 7

Black holes are not all over the place. their gravity is so great they are almost in the middle of a Galaxy. Their great gravity is what holds a Galaxy that is light years across.
If u fall into a black hole u will be squashed into something the size of a pin head or smaller. Nothing will survive.
They say that u cant see them but there infinitely great mass holds the entire Galaxy in orbit.

Answer 8

Yes, its possible. When 2 black holes merge, they form a black hole with the combined mass of the 2.

Answer 9

Black holes are objects in the space with such a big mass that even particles of light are absorbed by its gravitational force (that's why they are black, no light comes out of it). If a human fell into a black hole, that person would most likely be crushed by it's own weight and therefore die.

Answer 10

A black hole forms after a massive, heavy star has exploded at the end of its life. The outer parts are hurled into space but the core of the dead star, with no light and heat left to support it shrinks very quickly. Since it shrinks to so small size its pull of gravity is very strong. Any object coming to its hold is crushed to tiny particles.