what is a blackhole?

Answer 1

A blackhole forms from a dieing star, (not an exploding one). As a large enough star (bigger than ours) runs out of fuel it collapses in on itself (like a balloon that slowly leaks out and 'falls in on itself' if you get the idea).

From you high-school science class, you remember that atoms are made of protons, neutrons, electrons, etc.? Realistically, from a sub atomic point of view the little atom is MOSTLY empty space with the electrons orbiting the nucleus.

As the star collapses, it squeezes the atoms down to the point that the electrons stop "orbiting" and the star becomes a mass of the atoms particles (those protons neutrons, etc) but now they are packed together without all that space the electrons created between them before. As I remember, the statements are something like if you took a teaspoon of that 'blackhole soup' , it would weigh billions of tons for that tiny amount because it isn't made of the stuff we are used to dealing with, but a 'concentrated' version where the atoms don't have electrons orbiting creating 'empty space' in it anymore.

As far as the light part goes...
Everything that has a mass, attracts everything else. A person has mass, but that is such a small fraction compared to the earth, that you can't notice it between you and anything else. But that 'blackhole soup' has such a HUGE mass compared to anything else, it is theorized, that even as light goes by it, the mass is so great that it 'soaks' the light up too.

Answer 2

A 'black hole' is not so much a hole but a star which has a gravity field so strong it has collapsed in on itself allowing nothing to escape not even light. As light itself cannot escape the star appears invisible or 'black'.

The mass which formed the original star once collapsed creates a point which is the same mass as it was before it was a black hole but now it takes up an infinitely small amount of space, a singularity.

A few hundred years ago it was speculated that a star could have a mass so immense that not even light could escape from it, they were given the name 'black stars'.

The term 'hole' probably comes from the fact that like a hole on the Earth if you drop something into it you cannot retrieve it.

Answer 3

A black hole is a region of space that is created by a hole in space and "maybe even time". So as we don't know alot about them even I as an astrophysicist cannot explain it to you.
The things we do know is to be explained.
Black holes cause a gravitational field "not necessarily gravity itself" so getting near it will be and cause "no escape". As the gravity is so strong that not even light can escape this makes the hole or "event horizon" black "or 'invisible space-time' " black "or 'nothingness' ". Thus calling the body-less body or the "event horizon" a "Black Hole". The power or warp of the Hole causes light distortion making funny warped images like looking into a fun house's mirror or bent glass. Also that theories encounter space-time warping this phenomenon is theoretically been given a similarity of a theoretical astronomical object or phenomenom as the "Worm Hole". This warps space and time by using a 5th dimension to travel through space and time as if it was bent like a tunnel through a hill.

Answer 4

A black hole is a concentration of mass great enough that the force of gravity prevents anything from escaping from it except through quantum tunneling behavior. The gravitational field is so strong that the escape velocity near it exceeds the speed of light. This implies that nothing, not even light, can escape its gravity, hence the word "black.

Answer 5

black hole is the big hole that form when a massive star burns up and dies. the scientistic couldn't even find it 'cause it is too far away from earth and it can't be seen with the telescope since black hole doesn't reflect any light. the scientists predit that the sun will turn into black hole someday. but it is going to happen in way later. oh and black hole has a strong force of gravity, so it could suck all the planet and other things in universe.

Answer 6

a blackhole forms after a star expires, it becomes a area with such a strong gravitational pull that even light cannot escape.

Steven Hawking is the expert on them

Answer 7

A black hole is a concentration of mass great enough that the force of gravity prevents anything from escaping from it except through quantum tunneling behavior. The gravitational field is so strong that the escape velocity near it exceeds the speed of light. This implies that nothing, not even light, can escape its gravity, hence the word "black. ...

Answer 8

A black hole occures when a large star nears the end of its life, before it turns into a black hole it bursts into a supernova, the nucleus left after the explosion turns into a neutron star which then contracts under its own gravity turning into a black hole, the gravity in the black hole is so immense that it doesnt let any light come out hence therefore is black, (absence of light)

Answer 9

What are black holes?
Have you ever had to vacuum your bed room? When you do, watch closely because you will see the dirt, and crumbs start to move towards the vacuum cleaner. A black hole is similar to a vacuum cleaner, cleaning up debries left behind in outer space.
It is not suction power that makes things fall into a black hole. Suction would not be strong enough. Instead a black hole uses the power of gravity to pull things towards it.

Answer 10

An object that is so dense that within a given radius the gravitational force is great enough to prevent even light from escaping. This radius is referred to as the schwarzchild radius. The smallest measurable size of a black hole is referred to as a planck mass.