what do u mean by blackhole?
914906
Its a remain of a exploded star. After explosion, under it own gravitational force, it compacts so much that after certain point its escape velocity crosses the speed of light. So even light cannot escape from it. Thats why its called Black Hole.\nCheck out this URL and get to know more of this interesting thing of this Universe.\nhttp://en.wikipedia.org/wiki/Black_hole
1057805
A black hole is a star that has collapsed to the point that the empty space in the atoms no longer exists.  They are solid matter, though not matter that exists anywhere on earth.  They are called black holes because the gravitation force is so large that even light cannot excape.  The link below gives a decent explanation.
1171217
hmmmmm\na chirstian in a black hole wielding a black hole\n\nha ha ha
596967
A black hole is a concentration of mass great enough that the force of gravity prevents anything past its event horizon from escaping it except through quantum tunnelling behaviour (known as Hawking Radiation). The gravitational field is so strong that the escape velocity past its event horizon exceeds the speed of light. This implies that nothing, not even light, inside the event horizon can escape its gravity. It is, however, theorized that wormholes can let one exit a black hole. The term "black hole" is widespread, even though it does not refer to a hole in the usual sense, but rather a region of space from which nothing can return.\n\nThe existence of black holes in the universe is well supported by astronomical observation, particularly from studying X-ray emission from X-ray binaries and active galactic nuclei.
28506
A black whole is the closest to infinite density of mass that could be feasable given the dementions that we currently live in\n\nTry this:\nhttp://en.wikipedia.org/wiki/Blackhole
408123
Black holes don't have a purpose they just are!\n\nHowever Wikipedia gives\n\nA black hole is a concentration of mass great enough that the force of gravity prevents anything past its event horizon from escaping it except through quantum tunnelling behaviour (known as Hawking Radiation). The gravitational field is so strong that the escape velocity past its event horizon exceeds the speed of light. This implies that nothing, not even light, inside the event horizon can escape its gravity. It is, however, theorized that wormholes can let one exit a black hole. The term "black hole" is widespread, even though it does not refer to a hole in the usual sense, but rather a region of space from which nothing can return.\n\nThe existence of black holes in the universe is well supported by astronomical observation, particularly from studying X-ray emission from X-ray binaries and active galactic nuclei.
794668
Well, black holes are mysterious simply because they are regions where light itself cannot escape!  If you go by general relativity black holes are singularities where space and time lose their meaning in the rational sense!  As for black holes leading to some location, most likely that is not the case.  Such an object is a wormhole, which is a theoretical solution to Einstein's field equations like black holes are.  But, wormholes have not been observed in nature and they are unstable to the point where if even a tiny amount of mass enters the wormhole it will collapse it and destroy the matter before it ever gets to the other side!  So, that being true a black hole has no opening somewhere else, because if it did it would collapse the same way.  However, Stephen Hawking showed that black holes do dissipate over many billions of years because of quantum tunneling.  Turns out some matter/energy actually gets out of the black hole!  So, we still have alot to learn about the nature of black holes, because we still have to learn alot about gravity!
264247
It creates a black hole.
724210
something like what we call a "black hole"
377533
None. electron hole pairs is simply absence of electron in an atom or molecule. Black hole is a collapsed matter in the Universe due to strong gravity.
295074
Things that enter a black hole do not "implode," and black holes and the big bang are two uttern non-connected things.\n\nshort answer day!
893247
A "black hole" means that an object the size of a large star (larger than our sun) has burned up its atomic fuel so that it can no longer support the weight of its own matter and therefore collapes on itself.  This collapse of the star's own matter is so powerful that it crushes that matter (the atoms of the matter are crushed which means the electrons of those atoms are driven into the atom's nucleus, the protons and neutrons of the nucleus are crushed and even the quarks that make up the protons and neutrons are crushed) down to a point like place which is called a 'singularity'.  However, the gravitational force that that matter had associated with it still exists surrounding the singularity.  That gravitational force is so strong that nothing, not even light, can escape, hence the name 'black hole'.
585530
its hard to explain blackholes since no age of man can witness the change of a star to a blackhole. While energy of a human being cannot be destroyed, it is only transformed into a different energy.
1158151
you're thinking of a worm hole. a black hole will, as far as we know tear things apart to as it takes them to a different part of our universe, which doesnt make sense because nothing can escape from them. Anyway, a worm hole, which is theoretical -mostly- is like two black holes connected at their vertex's. think of the universe as a thin sheet of paper. one black hole is is on the right side, and another on the left. fold the piece of paper so that the black holes are lines up. instead of traveling from point A to point B, you just go through space in manner of speaking from point A to point B "just like that". there really isnt any just like that, but that's as best i can describe it with out actually showing you. sorry if this makes no sense.
767654
that's one theory.a black hole was the result of the big bang in every universe.it eventually swallowed other black holes to expand the universe.every known universe has a black hole in the center.if they become active they could destroy the universes around them as well as the universe they reside in.this would include our own universe.
758608
A black hole is a place where the escape velocity is greater then the speed of light because the object's gravity is so strong.  Since nothing is known that can go faster then the speed of light, anything falling into a black hole can never get out, hence the name "black hole."  What happens inside a black hole is not known.  The center of a black hole is theorized to be a singularity because it is a point where all the black hole's mass is squeezed to a point of infinite density.  We really don't know for sure what happens in a black hole because our current theories are not complete, and the fact that no information can ever leave a black hole.  While nothing can escape into a black hole, we can detect them because as things fall into them, they heat up and give off x-rays before they make the plunge.\n\nTwo types of black holes are known to exist.  One is formed when an extremely massive star dies, and it's core is so massive and small that it collapses under its own gravity to become a black hole.  Another type are called "supermassive black holes" which seem to exist in the center of every galaxy (that means our own too).  How or why these black holes formed nobody really knows.  It probably goes back to how galaxies formed in the first place, although we don't know that either.
755373
Black holes are a concept in cosmology and theoretical physics.  The idea of going into one doesn't really fit in with the science. \n\nUsing a mechanical model of the universe, black holes are extremely dense concentrations of matter with such a high gravitational force that everything (including light) is sucked in and cannot escape.  If you went near a black hole, you would be broken down into subatomic particles and crammed into the lump of compressed matter at the centre.\n\nHowever, quantum physics gives an alternative theory.  Black holes could be the ways in and out of shortcuts across the universe so that something sucked into one could be spat out of another.  This is probably something best not tried at home.