what is a black hole and what exactly is its purpose??

Answer 1

SECOND QUESTION FIRST. IF THERE IS A REASON WE ARE UNSURE WHAT IT IS. FIRST QUESTION. A BLACK HOLE IS AN AREA OF INTENSE GRAVITATIONAL PULL SO STRONG THAT NOT EVEN LIGHT ESCAPES. ANYTHING WHICH PASSES OVER THE EVENT HORIZON OR EDGE OF THE BLACK HOLE IS IRRETRIEVABLY LOST.

Answer 2

According to NASA

Black holes are the evolutionary endpoints of stars at least 10 to 15 times as massive as the Sun. If a star that massive or larger undergoes a supernova explosion, it may leave behind a fairly massive burned out stellar remnant. With no outward forces to oppose gravitational forces, the remnant will collapse in on itself. The star eventually collapses to the point of zero volume and infinite density, creating what is known as a " singularity ". As the density increases, the path of light rays emitted from the star are bent and eventually wrapped irrevocably around the star. Any emitted photons are trapped into an orbit by the intense gravitational field; they will never leave it. Because no light escapes after the star reaches this infinite density, it is called a black hole.
But contrary to popular myth, a black hole is not a cosmic vacuum cleaner. If our Sun was suddenly replaced with a black hole of the same mass, the earth's orbit around the Sun would be unchanged. (Of course the Earth's temperature would change, and there would be no solar wind or solar magnetic storms affecting us.) To be "sucked" into a black hole, one has to cross inside the Schwarzschild radius. At this radius, the escape speed is equal to the speed of light, and once light passes through, even it cannot escape.

click nasa link below to read entire article

Answer 3

its basically a super massive star that has collapsed. once a big star runs out of atoms to star fusing (with any star that is big enough to create a black hole the end would be iron). once that happens the iron core quickly expands as it starts to cool, the rest of the star is blown apart. gravity will sometimes bring the debris and the core back together and since the sun is no longer creating pressure because theres no more nuclear fusion going on gravity can collapse it as far is possible. so it collapses the whole star into a very small, very dense point. its so dense that the gravity of the black hole is massive. its so massive not even light has enough energy to escape it.

Answer 4

dstgame gave a good answer. I would add that a black hole is not limited to the size of a singularity, one estimated to be three miles in diameter is at the centre of our galaxy, and another point is that time does not exist in a black hole because matter is so densely packed within it there is no space for movement, no movement, no time.

Answer 5

A black hole is a stellar remnant that is too large for neutron degeneracy (neutrons hitting up against one another) to stop the collapse under gravity. The mass condenses to one infintesimally small 'singularity' with infinite density. The gravitational field is so strong that not even light can escape. For more info see www.wikipedia.org/wiki/Black_Hole.

Answer 6

This answer is not physics mainstream, but the answer may be found in the article on the website below. It will explain what Black Holes do.

Answer 7

A black hole is the matter from a collapsed star that has become extremely dense. It is so dense that its gravitational pull actually traps light particles, so not even light can escape from it once it gets close enough.

Answer 8

A black hole is when the matter or gravity of a Red Giant, or other big stars becomes too big, and the star explodes. This then pulls all of the gravity into it which sucks things up like a vacume.

Answer 9

it can can suck things faster than the speed of light and they dont really have an important purpose there like a money hole if u drop money in it u can get it out unless u go check it out

Answer 10

an astronomical body that absorbs mass and light, nothing escapes it except gravity.