What is black hole and what happens if anything goes there?

Question

What is black hole and what happens if anything goes there?

Answer 1

there is a lot to tell about this. i am making it up in short. justask23 has a point about gravity slowing down time. but ejecting it in 'some other time in the universe' is i dont agree. every point in time is creating a timeline, and there are infinite number of timelines. all though time is not defined, i think its the 'rate of occurence of events'. if what justask23 says is right, then the entire timeline will be altered, which i dont think is possible (because time is irreversible). but i do believe that its ejecting the matter out through an opposite black hole, known as the white hole(hence forming a wormhole ---- BLACK HOLE + WHITE HOLE = WORMHOLE). but the matter is ejected in some other universe running through a different phase of time. then, there are infinite number of universes, each running through a different point in time. black hole is a superdense star, with infinite amount of energy (in form of gravity). if anything goes there, there are (theoritically) 2 possbilities..... it can either get ripped to singularity, or it can end up in some other universe in some other point in time(which i believe)

Answer 2

Black hole is an object with very strong gravitational pull,  so that even a light ray which gets into it, does not come back.It is very dense.

Answer 3

A black hole is simply an object with a super super intense amount of  gravity. The object has so much mass, that it has a simply unbelievable amount of gravity. In fact, there is so much gravity, not even light can escape from the object, so it appears "black."

You fall in, you get squished.

The compression of the gravity will smash your atoms (which are sort of hollow) all together, squeezing out all the extra space that exists inside your body. But it happens in such a way that your atoms are actually going to be torn from each other as they get squished together.

You see the gravity is so strong that there is a huge HUGE difference between the gravity pulling on your feet and the gravity pulling on your head. If you are falling in feet first, the atoms in your feet will be pulled in and compressed so much faster than those in your head, that they will be pinched away from the rest of your body. Then the next few atoms will be pinched away, and so on until your head is squished by the compression of the gravity.

Also, it will look like it's taking forever for those of us watching from the outside...but that's another question

Answer 4

A black hole is a region of space in which the gravitational field is so powerful that nothing, not even light, can escape its pull after having fallen past its event horizon. The term "Black Hole" comes from the fact that, at a certain point, even electromagnetic radiation (e.g. visible light) is unable to break away from the attraction of these massive objects. This renders the hole's interior invisible or, rather, black like the appearance of space itself.

Despite its interior being invisible, a black hole may reveal its presence through an interaction with matter that lies in orbit outside its event horizon. For example, a black hole may be perceived by tracking the movement of a group of stars that orbit its center. Alternatively, one may observe gas (from a nearby star, for instance) that has been drawn into the black hole. The gas spirals inward, heating up to very high temperatures and emitting large amounts of radiation that can be detected from earthbound and earth-orbiting telescopes. Such observations have resulted in the general scientific consensus that—barring a breakdown in our understanding of nature—black holes do exist in our universe.

Answer 5

-Black hole: An extremely dense invisible celestial body with a gravitational field powerful enough to prevent the escape of light.

-The gravitational field of a black hole is so strong that its body is large enough. Nothing including the electromagnetic radiation can escape from its vicinity.

-The body is surrounded by a spherical boundary called a horizon through which light can enter but not escape it therefore appears totally black.

Answer 6

A black hole is known as a singularity that has an infinite amount of mass inside of an infinitely small amount of space known as a singularity.  The gravity is so strong that not even light can escape.

A supergiant star is a very massive star that produces energy by constantly fusing elements together and releasing energy in the process.  It's energy trying to radiate outward roughly matches it's gravitational pull and takes the form of a large sphere many millions to billions of miles in diameter.  When a supergiant star finally runs out of elements that it can fuse together (based on its mass) it will start to shrink and collapse on its self making it denser and denser.  The important think you need to understand at this point is that time, mass and gravity are all directly related to each other.  More mass will mean more gravity and more gravity will mean time passes by more slowly.  So when this star dies and starts collapsing you are packing more mass in to a given area thus increasing gravity and thus slowing time.  Now the reason light cannot escape from a black hole IS because of gravity but has more to do with time slowing down.  The light is escaping the black hole but just not in our time frame here on earth.  Even though time appears to be passing by normally on earth the time in the black hole has come to a stand still and this is where quantum physics take place and matter gets transfered to another time in the universe.  All the matter in the black hole is still right there...but in a different time so we cannot see it.  Keep in mind that this is all theory and has never been proven directly.  Hope this helps answer your question.  

Yeah..go ahead and give me a thumbs down for a theory you uneducated prick!  You can believe what you want to believe but I don't think that constitutes my answer as a bad one.

Answer 7

When an extremely large star reaches the end of its lifespan (burns out it 'fuel'), the gravitational force of the star's core forces it to collapse in on itself.  Because the star contains so much mass, the heat and nuclear forced are not able to balance out the gravity, and the star continues to collapse until it compresses into an infinitely small and infinitely dense point of matter, with a gravitational force so strong that not even light can escape.  Some have theorized that they are a sort of tear in space, but those claims aren't substantiated.

The event horizon of a black hole is a sort of boundary around the singularity.  Anything that travels past this boundary is hopelessly lost to the gravitational force of the singularity.  Nothing that enters can ever return, and the outside universe can never collect any information about what is happening beyond the EH (event horizon abbreviated).  You cannot see anything past the EH because, as I said, not even light can escape, and our eyes require light to be reflected off a surface and bounced back to our eyes in order to see.  The light that travels into the event horizon cannot return, as it cannot overcome the gravitational forces of the singularity, which should give you some idea of how incredibly strong these forces really are.

If you were to go 'into' a black hole, events would progress as follows:

1) As you approached the event horizon, time would begin to slow down.  You wouldn't notice it, but what seemed like one minute to you would be much longer to the rest of the universe.

2) As you crossed over the event horizon, your body would be stretched out until you were nothing more than a single line of atoms.  Even if you somehow survived this process, the intense radiation surrounding the black hole would certainly kill you.

3) Finally, you would be pulled into the singularity, and your mass compressed down into an infinitely small, infinitely dense point of matter, joining everything else that has been pulled into it.

It would be a pretty epic way to die, if nothing else...

Answer 8

an object with enough gravitational pull that not even light can escape it. so far as what it would do to you, look for the book "Death By Black Hole" by Neil Degrasse Tyson

Answer 9

"Black holes are thought to form from stars or other massive objects if and when they collapse from their own gravity to form an object whose density is infinite: in other words, a singularity.

By definition a black hole is a region where matter collapses to infinite density, and where, as a result, the curvature of spacetime is extreme. Moreover, the intense gravitational field of the black hole prevents any light or other electromagnetic radiation from escaping. But where lies the "point of no return" at which any matter or energy is doomed to disappear from the visible universe?

The Event Horizon

Applying the Einstein Field Equations to collapsing stars, German astrophysicist Kurt Schwarzschild deduced the critical radius for a given mass at which matter would collapse into an infinitely dense state known as a singularity. For a black hole whose mass equals 10 suns, this radius is about 30 kilometers or 19 miles, which translates into a critical circumference of 189 kilometers or 118 miles.

If you envision the simplest three-dimensional geometry for a black hole, that is a sphere (known as a Schwarzschild black hole), the black hole's surface is known as the event horizon. Behind this horizon, the inward pull of gravity is overwhelming and no information about the black hole's interior can escape to the outer universe.

The Singularity

At the center of a black hole lies the singularity, where matter is crushed to infinite density, the pull of gravity is infinitely strong, and spacetime has infinite curvature. Here it's no longer meaningful to speak of space and time, much less spacetime. Jumbled up at the singularity, space and time cease to exist as we know them.

Now brace yourself! Imagine that you are venturing into the black hole yourself. As you travel toward it you may notice nothing out of the ordinary, except an inability to steer yourself in any but one direction -- which is toward the "invisible" hole. You would never know when you had crossed the event horizon were it not for the increased gravitational tugging that draws your body longer and longer, squeezing in from the sides. You wouldn't last long, which is too bad, because theorists believe that inside a black hole, time and space are scrambled up strangely, such that even time travel, or travel to different universes via so-called "wormholes" might become possible, if (and a big IF!) you could survive the extreme gravity inside the hole."

Answer 10

A black hole is a region of space in which the gravitational field is so powerful that nothing, not even light, can escape its pull after having fallen past its event horizon. The term "Black Hole" comes from the fact that, at a certain point, even electromagnetic radiation (e.g. visible light) is unable to break away from the attraction of these massive objects. This renders the hole's interior invisible or, rather, black like the appearance of space itself.

Despite its interior being invisible, a black hole may reveal its presence through an interaction with matter that lies in orbit outside its event horizon. For example, a black hole may be perceived by tracking the movement of a group of stars that orbit its center. Alternatively, one may observe gas (from a nearby star, for instance) that has been drawn into the black hole. The gas spirals inward, heating up to very high temperatures and emitting large amounts of radiation that can be detected from earthbound and earth-orbiting telescopes.[2][3][4] Such observations have resulted in the general scientific consensus that—barring a breakdown in our understanding of nature—black holes do exist in our universe.[5]

The idea of an object with gravity strong enough to prevent light from escaping was proposed in 1783 by the Reverend John Michell[6], an amateur British astronomer. In 1795, Pierre-Simon Laplace, a French physicist independently came to the same conclusion.[7][8] Black holes, as currently understood, are described by Einstein's general theory of relativity, which he developed in 1916. This theory predicts that when a large enough amount of mass is present in a sufficiently small region of space, all paths through space are warped inwards towards the center of the volume, preventing all matter and radiation within it from escaping.

While general relativity describes a black hole as a region of empty space with a pointlike singularity at the center and an event horizon at the outer edge, the description changes when the effects of quantum mechanics are taken into account. Research on this subject indicates that, rather than holding captured matter forever, black holes may slowly leak a form of thermal energy called Hawking radiation.[9][10][11] However, the final, correct description of black holes, requiring a theory of quantum gravity, is unknown.

Answer 11

An abyss...

Nothing 'material' can survive it and even light can not escape from it unless something forms an Einstein/Rosen bridge with it.

Answer 12

holes in the universe which has more gravity to pull things in to the hole.

Answer 13

i don't like the term black "hole" ,.. it's not a hole it's a star that has collapsed and is very dense