What in theory is a black hole?

Answer 1

A black hole is an object predicted by general relativity,[1] with a gravitational field so powerful that even electromagnetic radiation (such as light) cannot escape its pull.[2]

A black hole is defined to be a region of space-time where escape to the outside universe is impossible. The outer boundary of this region is called the event horizon. Nothing can move from inside the event horizon to the outside, even briefly, due to the extreme gravitational field existing within the region. For the same reason, observers outside the event horizon cannot see any events which may be happening within the event horizon; thus any energy being radiated or events happening within the region are forever unable to be seen or detected from outside. Within the black hole is a singularity, an anomalous place where matter is compressed to the degree that the known laws of physics no longer apply to it.

Theoretically, a black hole can be any size. Astrophysicists expect to find black holes with masses ranging between roughly the mass of the Sun ("stellar-mass" black holes) to many millions of times the mass of the Sun (supermassive black holes).

The 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. It has also been hypothesized that black holes radiate an undetectably small amount of energy due to quantum mechanical effects. This is called Hawking radiation.

Answer 2

Some large stars collapse and have a white dwarf. A tea spoon of white dwarf would weigh hundreds of tons. Now some larger stars can collapse even further and having a gravitational pull so strong it not only light can't escape from them, they can rip another star apart that is several million miles away. Black holes can even merge to make even stronger black holes.

Answer 3

When a very massive star (much larger than our sun) has depleted its nuclear fuel, its own gravity causes it to collapse in upon itself. If the star is large enough, it actually compresses down to a single point or singularity. It practically squeezes itself out of existence. It is now invisible, but its gravitational field remains.

Answer 4

a star gives off energy and disrupts the gravitational forces but when it dies the energy is gone and the immediate condensing of the dead star causes a swarming of gravitational forces to the once star and it overloads and creates a black hole

Answer 5

An ongoing phenomenon. Some say it never ends, Scientists think if something were to fall into it, it would end up somewhere else in the universe.

Answer 6

it's a thing that is created in space whenever a planet dies. for more details you should go to www.wikipedia.org and in the search bar type in black holes and ta da!

Answer 7

A star the has colapsed on itself and it own gravity crushed it into itself.

Answer 8

Yo mama's mouth!!