What is meant by biack hole?

Answer 1

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'.

Answer 2

A black hole is an astronomical phenomenon that seems to be the result of a star collapsing. In the collapse it creates a kind of 'gravity well' in which the gravitational forces become massive. Gravity is normally a 'weak force' in the workings of the universe. In a black hole the gravitational force is so strong that nothing - not even light - can escape it's pull.

Some researchers (the Astrophysicist Professor Lee Smolin in particular) have theorised that new baby universes may be created in the heart of black holes. On the 'other side' of a black hole's singularity a whole new 'Big Bang' occurs.

This research began as an exploration of the question: "Why are the laws and constants of nature seemingly fine-tuned to favour the appearance of carbon-based life?
"For Smolin the answer is that the appearance of a life-friendly universe is mearly an epiphenomenon - a secondary and entirely coincidental consequence of a black-hole friendly universe....
(The explaination for the coincidence is complicated, but it centres on the propensity of black hole-friendly universes to produce copious amounts of carbon, which is obviously a prerequisite for the appearance of carbon-based life-forms like ourselves.)

(quotes from "Biocosm" by James N. Garner - Inner Ocean Books)

Answer 3

a black hole is a region of space that has so much mass concentrated in it that there is no way for a nearby object to escape its gravitational pull. Since our best theory of gravity at the moment is Einstein's general theory of relativity, we have to delve into some results of this theory to understand black holes in detail, but let's start of slow, by thinking about gravity under fairly simple circumstances.
Suppose that you are standing on the surface of a planet. You throw a rock straight up into the air. Assuming you don't throw it too hard, it will rise for a while, but eventually the acceleration due to the planet's gravity will make it start to fall down again. If you threw the rock hard enough, though, you could make it escape the planet's gravity entirely. It would keep on rising forever. The speed with which you need to throw the rock in order that it just barely escapes the planet's gravity is called the "escape velocity." As you would expect, the escape velocity depends on the mass of the planet: if the planet is extremely massive, then its gravity is very strong, and the escape velocity is high. A lighter planet would have a smaller escape velocity. The escape velocity also depends on how far you are from the planet's center: the closer you are, the higher the escape velocity. The Earth's escape velocity is 11.2 kilometers per second (about 25,000 m.p.h.), while the Moon's is only 2.4 kilometers per second (about 5300 m.p.h.).

Answer 4

Hi,
There isn't biack hole exist here. I guess you mean black hole.
Black hole sucks all the materials include light into it. Light cannot go out from the black hole once it was sucked inside the black hole. However the other materials can get out from the black hole.
Black hole sucks the material and sent it to our past, our future and to any side of this world.

Hope these help you.

Answer 5

I assume you mean black hole. That is any object that is so dense that gravity makes escape velocity from it's surface greater than the speed of light.

Answer 6

Light can't escape the black holes gravitational pull, upon entering light no longer exsists. Compressed to nothing.

Answer 7

-biack hole -TO me Nathing