what exactly is a black hole?

Question

if scientist theroize on a black hole how would they know whats really in a black hole and what it is. they just make a similation on it can they?

Answer 1

A black hole is basically a phenomenon in the universe which sucks in all matter around it and is so powerful it can even suck in light. They have a tiny mass and can float around, they are associated with dark matter, and it is generally assumed that there are supermassive black holes in the centre of every galaxy. They can be spherical, or they can be a weird shape.

But... we're not sure. The laws of physics don't apply with black holes for some reason, and for the record we have only theories, we can't wrap our heads around why they are there. One idea is that black holes keep the universe stable. Another is that they are ggateways to other parts of the universe, or to a 'white hole' to a universe where the colours of black and white are inverted.

They are created when a star dies. The mass of the imploding star is so strong that when it dies, it sucks into itself and forms a 'hole' in the universe. They vary wildly in size, and they can also die.

To create a black hole, you would have to meet the conditions of an imploding star. We don't exactly have the technology to recreate that yet!

Answer 2

A black hole is a point of singularity whose existence was discovered and thought out by Roger Penrose and Stephen Hawking. Basically it's a point of infinite density and extreme gravity. This extremely gravity causes light to become trapped and therefore there is almost no way to detect it. I remember Stephen Hawking saying something about some type of particles that are able escape black holes. Recently I heard that information from black holes isn't destroyed because it empties into other universes which don't have black holes. The is also something else interesting about black holes. The gravity is so intense that time will slow down drastically around the black hole. Oh yea and this person would be torn to pieces at the atomic level so I wouldn't recommend going near a black hole. Stay away from the center of the galaxy.

Answer 3

A black hole is the force that remains after a star dies. A star maintains it's shape because of the gravity holding back the nuclear reaction. When the fuel is used up, the gravity will suck the star into one singularity and therefore, the mass of the star will be so great ( the more mass in one point, the greater the gravity ) that it sucks almost everything that comes into acertain radius. When a thing crosses the black hole's horizon, it can never come back out unless it's a spinning black hole where you can use it's centrifugal force to help boost you out ( it would take a miracle )

Some scientists say the black hole bends time-space fabric, connecting one end of the fabric to another side which creates a wormhole which could bring you to another dimension, time or place. Some say you'll just be crushed into that one point, the singularity and just become part of it's mass.

I've listed a website in which you can go look up on.

Hope it helps :)

Answer 4

A black hole is a very dense concentration of mass, so dense that escape velocity near it is greater than the speed of light. That is not the same thing as saying it will suck in all matter, but the details of why that isn't the case seem to escape most people. Suffice it to say that matter falling to Earth (meteors) never escapes either, so there is nothing really special about matter falling into a black hole being unable to escape. The only special thing about the black hole is that a light beam, which CAN escape from Earth, cannot escape from the black hole.

Answer 5

A black hole is defined to be a region of space-time where escape to the outside universe is impossible. The boundary of this region is a surface called the event horizon. This surface is not a physically tangible one, but merely a figurative concept of an imaginary boundary. Nothing can move from inside the event horizon to the outside, even briefly.

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 energy due to quantum mechanical effects known as Hawking radiation.

Answer 6

A black hole if it could exist,would be 1.5 to 2 solar mass body whose diameter had been squeezed down to about three km in diameter.
The gravity at the surface would be so intense that a satellite would have to travel at the speed of light to maintain orbit.
They say no light could escape,hence a black hole.

Answer 7

WHAT EXACTLY DO YOU WANNA TO KNOW ITS DEFINATION OR SOME KIND OF DETAILS .TRUST ME BLACK HOLE IS THE MOST MYSTERIOUS TOPIC IN PRESENT ASTRONOMY.

WHEN STARS HAVING RADIUS LESS THAN SCWHERINGCHILD RADIUS IT WILL COLLAPSE UNDER ITS OWN GRAVITY TO FORM BLACK HOLES.SCWHERINGCHILD RADIUS FOR OUR EARTH IS 1.5meters.MORE ELEMENTARILY SPEAKING STARS WHICH ARE 38 TIMES MORE MASSIVE THAN OUR SUN WILL ULTIMATELY COLLAPSE INTO BLACK HOLE. THE GARVITY EXERTED BY BLACK HOLE IS GENERALLY TAKEN AS INFINITY THAT IS EVEN LIGHT CAN'T ESCAPE FROM IT.
SCIENTIST ARE FOUNDING EVIDENCES TO PROVE THAT BLACK HOLES ARE RESPONSIBLE FOR THE FORMATION OF GALAXIES,HEAVIER RADIOACTIVE ELEMENTS,AND SCIENTISTS HAVE FOUND EVEN SOME LINKS BETWEEN BIG BANG AND BLACK HOLES
OTHER INTERSTING THINKS ASSOCIATED WITH BLACK HOLES ARE SUPERNOVA EXPLOSIONS,WORM HOLES THE SHORTCUT IN SPACE AND TIME,QUASARS, WHITE HOLES.
EMAIL ME ANYTHING REGARDING BLACK HOLES

Answer 8

A black hole is created the same way a white dwarf is created, but the gravitational force is so strong that light can't escape and therefore you can't visibly see it.

Answer 9

There is a black in the middle of each Galaxy that has enough gravity to hold everything in orbit . It is so huge that it holds things in orbit several light years away. That is huge.

Answer 10

Well blackhole
is full of gravity hence stars or planets revolve around them
as it is black it absorbs all the light and it is not observed
nut it is there
bcoz the objects revolve around it