I am starting with the name of Allah Almighty ❤️😄.

Assalam-0-alikum ❣️
I hope all my friends in this community will be happy and enjoying our healthy life by the grace of Allah Almighty ❤️.I am also happy and well by the grace of Allah Almighty 🥰.
Today I will start different topic that I can explain you in this community called steem-skillshare community.This topic name is Black hole .I hope you like my this skills.
So,let's start go to my topic:-

who invented black hole?

Albert Einstein is the first physicist scientist who predicted the existence of black hole 🕳️.They will be invented in 1916.The black hole discovered Within the milky way.
According to the Space Telescope Science Institute, one out of every thousand stars has enough mass to become a black hole. Because the Milky Way contains more than 100 billion stars, our home galaxy must contain 100 million black holes.

closest black hole to Earth 🌍

The closest black hole to Earth is known as "The Unicorn," and it is located about 1,500 light-years away. The nickname has two meanings. The black hole candidate not only lives in the constellation Monoceros ("the unicorn"), but its incredibly low mass — about three times that of the sun — makes it nearly unique.

Region:-

According to general relativity theory, a sufficiently compact mass can deform spacetime and form a black hole.The event horizon is the point beyond which there is no escape. Although it has a significant impact on the fate and circumstances of an object passing through it, general relativity states that it has no locally detectable features. A black hole is similar to an ideal black body in many ways because it does not reflect light.

Length and width of black hole:-

You can see this image,

Space	Length	Width
Black hole	24million km	63million km

How black hole is formed?

The death of a many star can formed is the result of black hole. The core of a massive star becomes unstable and collapses in on itself at the end of its life, and the star's outer layers are blown away. The crushing weight of constituent matter falling in from all sides compresses the dying star to the singularity, a point of zero volume and infinite density.

Black hole properties:-

There are 3 types of black hole properties,

Black hole	Properties
1	Mass
2	Spin
3	Charge

1:-

Mass

Many types of black hole gives vary in mases.Stellar-mass black holes are typically 10 to 100 solar masses in size, whereas supermassive black holes at galaxies' centres can be millions or billions of solar masses in size. Sagittarius A*, the supermassive black hole at the centre of the Milky Way, has a mass of 4.3 million solar masses. The mass of this black hole has been measured directly by observing the entire orbit of a circling star. Black holes are expanding by thr absorbing of nearest matter and merged them with the other black holes ️.

2:-

Spin

The rotation of a black hole is called its spin.
Black hole is exist in between the milkyway.Black holes, like stars and planets, rotate on their axes. The difference is that, unlike stars and planets, black holes do not have a physical surface. The spin of a black hole, like its mass, is a spacetime parameter. The way space is distorted around a black hole is determined by its spin. To determine a black hole's spin, researchers must examine how matter behaves near it.

The rotation of our galaxy's nearest supermassive black hole is unknown. Our black hole isn't quite as active as M87's, and it's a lot smaller. By viewing light near it, we can't measure its spin.

3:-

Charge
When charged matter falls into black holes, they become electrically charged. Black holes have a "extremal limit," a saturation point where they can hold as much electric charge as possible given their size, according to physicists.

Magnetic fields can be born in black holes or acquired later, such as by eating a neutron star, a highly magnetic dead star. When Bransgrove and colleagues modelled the plasma around a magnetised black hole, they discovered that the magnetic field can leave the black hole through a process called magnetic reconnection. Magnetic field lines that lay out the direction of the field split apart and reattach. Magnetic field loops form around blobs of plasma, some of which explode forth and others which fall into the black hole.

This is the end of my post.I hope you like my post and my efforts 💞🤠.
I'm very thankful to you because you can serve very important time to my black 🕳️ hole post.

special mention to
@steem-skillshare

With best regards:-

@shahri-shiekh

20-06-2022