What do you think is at the end of a Black Hole in space?
349082
Another black hole and at the end of that another black hole, and at the end of that another black hole, and at the end of that another black hole, and at the end of that another black hole, and at the end of that another black hole, and at the end of that another black hole and at the end of that a Cadbury's Mini Egg inside a Cadbury's Easter Egg inside a bigger Cadbury's Easter Egg.
730461
near zero. \n\nExcept that there is some mass in space, - like space dust. And there's the solar wind pushing outwards.
144870
We have no idea what happens to any matter inside a black hole. The laws of physics that we know do not apply.
311305
how do you understand anything?  We can't understand everything there are things beyond our comprehension.  Try to think about this, does space end?  Is it infinte?  what is infinite?  You kno?
128460
It might be, or it might be a neutron star. We do not really know. \n\nThere are some other objects in the sky which are much more certainly black holes, from their masses and other properties.
1057606
Most people *don't* believe galaxies are black holes.  A black hole is a region of space from which nothing can escape, even light.  \n\nSince you can't see a black hole (that light that isn't escaping), one has to rely on indirect evidence.  \n\n If you've found a large mass concentrated in a small volume, and if the mass is dark, then it's a good guess that there's a black hole there.  \n\nIt'll be quite some time before we can get "hard evidence" of a black hole.  We don't even have "hard evidence" that those are stars; it's just indirect evidence.
918848
According to general relativity, the matter inside a black hole collapses to a single point: a "singularity".  At this point, the mass density (ρ = m/V) is undefined (because the volume of a single point is zero). \nWe have a lot to learn about extreme cases such as this.
1952
A black hole is formed by a star, most likely a neutron star, collapsing into a space a few kilometers across. It is made up of the same thing a neutron star is, mainly hydrogen, helium, oxygen, and a few other elements. Once the black hole forms, it can absorb large amounts of matter from surrounding stars.
19986
you get a black hole.
571912
Good, very good!!\nJaxon is very right.\n\nAdd few things:\n\n1. Black holes are the least understood entities and by nature human beings perfer to know about unknown.\n\n2. Neutron stars and black holes are closely related, they differ in amount of gravitational pull.However neutrn stars are visible and so are being reffered as a paddestal to understand black holes.\n\n3. As jaxon pointed out black hole may indicate end of univers: be clear, end of universe in terms of time not boundries or limits.\n\n4. Generally Black holes are present in the centre of glaxies so they help in understanding the creation of glaxies.\n\n5. As referred by jaxson about light: Be clear that the gravitational pull of black holes is so great that light can not escape out of a black hole.\n\n6. The postulate in the theory of relativity regarding deflection of light path under the influence of greavity is is witness near Neutron stars and black holes.
389263
stephen hawking has said that balck holes indeed behave like black bodies, emitting some radiation, usually gamma and x rays. \nAlso, when matter falling into the black hole causes the black hole to spin. This creates a magnetic field like that of Earth's, emitting the high energy particles in the form of jets through the north and south poles of the rotating blackhole.\n\nSo, some kind of info might be released from a black hole, thats if the spaceship can detect these signs.
554770
A black hole is believed to be a neutron star that collapsed in itself because of extreme gravity. The gravity would get so strong that it forces even time and space into itself including light (that's why it's called black). Also associated with a "wormhole" and figured to be a portal to parallel universes or looped back to this universe in a different time, after the theory of the Einstein-Rosen-Bridge.\nI don't know if someone tried to measure the value of the gravity or if there is even a speculated formula but I don't think so.
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.
38830
a black hole is a point of infinite density and gravitational pull. First of all you would be dead from different gravitational pulls from the black hole. Second of all, time from your perspective would stop, assuming that einstein is correct and your image would be spread out over an infinite period of time so your friend would see nothing.
557703
Black holes are huge concentrations of mass in a very small area.  So small that it is too small to contain conventional matter as we understand it.  There is a perimeter around a black hole known as the event horizon.  Beyond this point, nothing, not even light can escape the gravitational pull of a black hole.  If you were to be able to stand on the event horizon and have telescopic vision like Superman, looking tangent to the event horizon, you would see the back of your head.
775784
Black holes as mentioned above are a singularity.  Nobody really knows what happens once you cross the event horizon ( the edge of the black hole).  These are very strange events in that they pull everything including light towards them, which contradicts Newtons second law with mass being proportional inversely proportional to mass ( as light has no mass) and Einstein's theory of relativity and the conservation of mass and energy.  All theory we have breaks down when we encounter black holes.\n\nAn interesting theory is that black holes are a link to another universe, matter passing through a black hole and appearing through a white hole in another universe.  This theory has the assumption that there is more than one universe and that they are all linked.  Stephen Hawking's "A Brief history of time" gives many interesting insights.  \n\nHe has recently changed some of his views however with a new theory that a Universe is created by the bumping of one universe into another with black holes becoming the remanents of the reaction, and thus there is no begining or end to time.  He is publishing his ideas soon.  In short however nobody really knows what happens in a black hole.
17
The current scientific theory holds that black holes are formed when stars of sufficient mass (about 3x the mass of our Sun) reach the end of their life and collapse down into a singularity, which is, in essence, an infinitely small point with a huge amount of gravity - gravity so powerful that not even light can escape it's pull if it gets too close. It is also thought that black holes can be formed from smaller masses if external energy/pressure is exerted to squeeze the mass into a singularity.\nNot sure if there's any direct experimental evidence of creation, but there is evidence that they exist. Cosmologists use several different methods to detect blacks holes, such as by looking for light being bent and/or disappearing as it travels from remote stars towards us, and also by looking for bursts of x-rays that are given off as matter is sucked into the back hole and destroyed.\nFun fact: current evidence and theory suggests that the center of the Milky Way is a giant black hole that was formed as the densly packed stars in the center collapsed and sucked each other in.