what do you guys think a black hole is?

ktimekiller

ktimekiller

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today, i was reading my science book (boredom) and i came accross a chapter about galaxies, and i saw a drawing of a black hole, and a small discription about it. it didnt explain a whole lot, what do you guys think a black hole is?
 
A star that has collapsed into a singularity and happens to also have a huge gravitational pull due to it's extreme mass?

I think, I never was good at science. :p
 
A supernova that has collapsed itself and its mass is super giga high. So everything is attracted to this, even light.

EDIT: Damn... KagePrototype, you beat me by a second.

Einstein (not too sure) pointed that theory of the universe being geometric.
 

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A black hole is a concentration of mass with a gravitational field so strong that the escape velocity from nearby points exceeds the speed of light. This implies that nothing, not even light, can escape its gravity, hence the word "black." The term "black hole" is widespread, even though the theory does not refer to any hole in the usual sense, but rather a region of space from which nothing can return.

Black holes are predicted by general relativity. According to classical general relativity, no matter nor information can flow from the interior of a black hole to an outside observer. For example, one cannot bring out any of its mass, or receive a reflection back by shining a light source such as a flashlight, or retrieve any information about the material that has entered the black hole. Quantum mechanics, however, may allow exceptions to these strictures. The existence of black holes in the universe is well supported both theoretically and by astronomical observation.
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That's what it's supposed to be... But i prefer a theory more miraculous. It's a portal into the unknown, the blackness representing our ignorance and what we do not know, which is also our greatest fear. Curiosity is derived from fear, as we are scared of what might be going on, or what might exist. So naturally black holes are curious. I mean, they could be anything... A gateway to heaven, perhaps.
 
did you take that right out of my science book?(not you suicide) thats exactly what it said, anyone have a theory what happens inside it?
 
Formed when a star of greater than about 10 solar masses reaches the end of its lifespan, having fused as much matter as possible. The star collapses under its own gravity to a size determined by the Schwarzschild radius, at which point its gravity becomes so great that not even light can escape. These objects are responsible for gravitational lensing effects and are also thought to be the explanation for some types of active galactic nuclei.
 
you saw a drawing of a black hole...so what, was it like the bleak blackness of space with a dark object trapping all the light surrounding it?

Is that like the drawing of the polar bears in a blizzard?
 
^Ben said:
The star collapses under its own gravity to a size determined by the Schwarzschild radius.
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that really got my attenchen

and great post there xcellarate!
 
ktimekiller said:
did you take that right out of my science book? thats exactly what it said, anyone have a theory what happens inside it?
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You blow up even far before you reach the inside. The gravity is so high, that you would just be reduced to some fluid. Scientists said that the particles attracted in the inside may just turn in spiral for ages.

Again, see the picture.
 
I heard fro msomeone that once your in (a theory, not statement) that if you try to move, you move, but your not really moving (i dont get this either...)
 
ktimekiller said:
I heard fro msomeone that once your in (a theory, not statement) that if you try to move, you move, but your not really moving (i dont get this either...)
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Ever heard of the theory of Einstein? Moving really fast can change the time for you. Inside the black hole, the attraction makes you move so fast that moving doesn't really make you move. I'm just speculate right now, so please don't quote me :D
 
Well that's just retarded, because you can't possibly survive inside...well, as far as we know.
 
Ugh... there seems to be this misconception that the gravity of a black hole will 'bend light.' Gravity only affects masses. Light has no mass. What happens is the gravity is so strong it warps the ether (the 'empty space' that the universe is made of) around the black hole, so when light gets near it, it doesn't bend, but the ether makes it appear to an outside observer that the light has changed direction, when in fact it's gone in a straight line the entire time. If you were to somehow travel (reasonably) near a black hole or a star without being affected by gravity, you could go in a straight line, without changing direction, and you would still go into the black hole, because space itself is warped.
 
.......The supposed singularity in the centre, where all physics does not apply......who knows what would happen if you went into one.

However you would most likely perish.
 
... it baffles me.

i jus think its like a plughole, but instead of water going down there, its planets and galaxies.. heh
 
I have to say I subscribe to the pretty much accepted theory by a lot of Scientists on the subject, I don't think there's anything particularly miraculous about them, such as them being able to teleport you from one side of the galaxy to the other.
 
-Viper- said:
Ugh... there seems to be this misconception that the gravity of a black hole will 'bend light.' Gravity only affects masses. Light has no mass. What happens is the gravity is so strong it warps the ether (the 'empty space' that the universe is made of) around the black hole, so when light gets near it, it doesn't bend, but the ether makes it appear to an outside observer that the light has changed direction, when in fact it's gone in a straight line the entire time. If you were to somehow travel (reasonably) near a black hole or a star without being affected by gravity, you could go in a straight line, without changing direction, and you would still go into the black hole, because space itself is warped.
Click to expand...

The ether has been proven to either (a) not exist or (b) be unmeasurable, by the Michelson Morley interferometer experiment. So it is not the ether that is warped, it is the actual dimension of space itself.
 
A collaped star which graviry is so big that not even light escapes. Some scientists belive, that some black holes have so big gravity that not even time itself escapes.
 
The_Monkey said:
A collaped star which graviry is so big that not even light escapes. Some scientists belive, that some black holes have so big gravity that not even time itself escapes.
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I think that applies to any black hole at their event horizons, not only supermassive ones. Still applies to ones that exist all around you on the microscopic scale.

Although I'm not quite clear on the meaning of 'time itself not escaping', you could say time is distorted or dilated by gravitational effects.
 
how can gravity effect time? i dont think thats possible, and if it is, how and what?
 
There is no such thing as time in the center of a black hole. Time is a product of our universe, and black holes are holes in our universe. Everything we understand about how the universe works does not apply to singularities.

And if you fell into one, it'd kill you for sure. I believe that to an outside observer, it would appear that you get frozen in time, that it takes essentially forever to actually get to the center of the black hole. But perceptually to the person falling in, it would be rather quick and messy (you'd get stretched to death).
 
^yeah, a person outside would see you slowing down as if aproching an asymptote. I think the streching to death would have occoured well before then however, so the observer would see all of what was once your body slowing down.
 
Ugh... there seems to be this misconception that the gravity of a black hole will 'bend light.' Gravity only affects masses. Light has no mass. What happens is the gravity is so strong it warps the ether (the 'empty space' that the universe is made of) around the black hole, so when light gets near it, it doesn't bend, but the ether makes it appear to an outside observer that the light has changed direction, when in fact it's gone in a straight line the entire time. If you were to somehow travel (reasonably) near a black hole or a star without being affected by gravity, you could go in a straight line, without changing direction, and you would still go into the black hole, because space itself is warped.
Click to expand...

Space being warped is what gravity is. Masses warp space, which causes the effect known as gravity.

At least, if Einstein was right. Which he might not be. They're still testing General Relativity. It's passed all tests so far, but we have more precise equipment now.
 
HadouKen24 said:
Space being warped is what gravity is. Masses warp space, which causes the effect known as gravity.

At least, if Einstein was right. Which he might not be. They're still testing General Relativity. It's passed all tests so far, but we have more precise equipment now.
Click to expand...

More than testing it, they actually need to take it in account in calculations, for example in GPS systems.
 
yaya wave particle Duality :)

An electron has a wavelenght and is a particle :)
 
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