Introduction to Black Holes
Black holes are objects so dense that not even light can escape their gravity, and since nothing can travel faster than light, nothing can escape from inside a black hole. On the other hand, a black hole exerts the same force on something far away from it as any other object of the same mass would. For example, if our Sun was magically crushed until it was about 1 mile in size, it would become a black hole, but the Earth would remain in its same orbit.
Even back in Isaac Newton's time, scientists speculated that such objects could exist, even though we now know they are more accurately described using Einstein's General Theory of Relativity. Using this theory, black holes are fascinating objects where space and time become so warped that time practically stops in the vicinity of a black hole.
The former type have measured masses ranging from 4 to 15 Suns, and are believed to be formed during supernova explosions. The after-effects are observed in some X-ray binaries known as black hole candidates.
On the other hand, galaxy-mass black holes are found in Active Galactic Nuclei (AGN). These are thought to have the mass of about 10 to 100 billion Suns. The mass of one of these supermassive black holes has recently been measured using radio astronomy. X-ray observations of iron in the accretion disks may actually be showing the effects of such a massive black hole as well.
For more information,please visit :
http://imagine.gsfc.nasa.gov/docs/science/know_l1/black_holes.html
2006-08-02 16:39:22
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answer #1
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answered by Thuy Nguyen 2
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what do u think about them? They are incredible something so small but so dense it is mind blowing.
their existence? They exist
their nature? Extremely dense remains of a collapsed star.
what do u think you´ll see if u falls inside one? Nothing because lite can not penetrate it.
ehat happens with space and time inside? Since time is relative to the gravitational force time would go by extremely fast.
with pfisic laws? ?
2006-08-02 23:27:40
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answer #2
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answered by zuse 2
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When the big bang occurred, matter was driven from the epicenter in all directions. Some of these were diametrically opposed.Hypothesize that two of these: . call them matter A and matter B. were diametrically opposed and were each driven from the epicenter at 100,000 miles per second (well within Einsteinian limits) however, their relative speed would have been twice 100 mps. Billions of years later, an astronemer on matter A looks at matter B through a telescope. What does he see?
2006-08-03 00:37:27
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answer #3
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answered by bobnadel@verizon.net 1
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Only a penis knows for sure. LoL. Scientist's theorize that there's a black hole - a collapsed star's intense gravitational pull, yada, yada - in the center of our galaxy. If such is the case then I would think that it's important, 'cause everything in the universe, from the weird to the not so weird, work together somehow to make it all work. For theory to become fact, however, we'll have to get sucked in. Any volunteers?
2006-08-02 23:20:28
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answer #4
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answered by Wunderkind 2
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I just fielded this question from my wife and my answer made no sense to her so I hope it helps you.
Black Holes Exist. Yes they Do
If you fall into one you will be dead due to the gravitational forces that are in play, But you will also not be dead and if you fall into one you will never fall into one at least to an outside observer you would forever circle the event horizon so to the outside observer you would never die but to yourself you would be dead.
2006-08-02 23:14:18
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answer #5
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answered by ? 3
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what do u think about them? they suck
their existence? i think they exist
their nature? their really heavy
what do u think you'll see if u falls inside one? nothing
ehat happens with space and time inside? nothin much
with pfisic laws? wha ????
thats what i think
2006-08-02 23:17:31
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answer #6
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answered by Martin 3
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Because there is too much writing matter to put down...I prefer to give you couple sites so you are gonna have the pleasure to find by yourself.
http://www.kidsastronomy.com/black_hole.htm
http://antwrp.gsfc.nasa.gov/cgi-bin/apod/apod_search?Black+holes
get which one is more proper for your age.... or both of them...
Good Luck
2006-08-02 23:31:01
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answer #7
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answered by UncleGeorge 4
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idk but their very interesting cause it sucks up everything even light so im guessing its lit up inside of it and its incredible small which such massive gravity and hopefully someday we'll find out whats inside them, althought its gonna be hard because to do that we'll prolly have to reach the speed of light before doin that
2006-08-02 23:35:05
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answer #8
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answered by Anonymous
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