Black Hole: — The Space monster !!
There is no end to the wonder and magic of the Earth itself; who dares to think about the universe again? Even if you think again, many people say, what grandfather? Eating at home, what is the need to chase the buffalo in the forest? But man is only thirsty for knowledge; once a maze is built on his head, he breathes his last. Similarly, one of the largest labyrinths in the universe is called a black hole.
According to the theory of general relativity, a black hole is a special place in space from which nothing, not even the highest speed entity, can emit ‘light.’ It is a planet, satellite, comet, or spacecraft.
The first idea of a black hole on Earth was made in the late eighteenth century by the British geologist John Mitchell. In 183, he said that if an object was small enough in size and sufficient in mass, no light waves could come out of it under the influence of gravity. He named them dark stars. In 1896, the mathematician Pierre Simon Laplace gave the same doctrine in his book Exposition du Systeme du Monde’s first and second editions.
In 1918, Sir Einstein, with his “General Relativity Theory,” suggested that it was possible to have a black hole. Show by the theory of relativity that any star can turn into a black hole. In 1986, Wheeler first introduced us to the name ‘Black Hole.
Now the question may be, how are black holes created?
There are at least 100 billion Milky Way galaxies in the observable universe. Each galaxy contains more than 100 trillion stars. Nuclear fusion or fusion reactions cause constant explosions inside stars. Multiple hydrogen atoms combine to form helium atoms, which emit energy with a tremendous explosion, radiation, heat, light, etc. But when the stars run out of this nuclear fuel (hydrogen), their nuclear reactions stop. As a result, the centripetal compressive pressure exceeds the effect of the external pressure caused by this nuclear reaction, so that all the mass of the star begins to compress at the center, and at some point, it shrinks and becomes a black hole.
Small stars like our Sun run out of fuel and cannot react because they do not have enough mass, so they die instantly. In this condition, they are called White Dwarf. After the coupling process is over, they continue to glow due to extreme temperatures, and after billions and billions of years, they cool silently and transform into what is called the Planetary Nebula.
However, some stars whose strong internal magnetic field emits strong light rays seem to glow and fade away like the flickering light of an egg light. This type of star is called a pulsar who survives a supernova explosion.
When the Sun explodes between hundreds of times supermassive stars, they are called a hypernova. These explosions are the largest and brightest explosions in the universe, with the amount of energy emitted in the first 1 second being 100 times greater than all the energy emitted throughout the life of our Sun (until it is extinguished).
It is almost impossible to see a black hole with the naked eye; only its boundaries can be perceived. And this boundary is called the event horizon. Nothing can come back once you enter this boundary. Falls directly into the center, which is called black hole singularity. The is the place where space and time become one.
Scientists can only imagine the number of black holes on Earth. Because our galaxy alone has billions of black holes. Scientists have generally divided black holes into two parts based on their size. The supernova black hole is the largest, which can have only one in each galaxy.
It can be millions of times, even billions of times larger than the Sun. It is located in the middle of the galaxy. Our Milky Way galaxy also contains a supernova black hole named Cesatarius ‘A’. It is about 26,000 light-years away from our solar system, which is about 4 million times heavier than the Sun.
Another type of black hole is the stellar black hole. It is relatively small but 10 to 20 times larger than the Sun. It revolves around galaxies in scattered states. A single galaxy can contain millions of stellar black holes.
There can be many different types of black holes. A nice type of black hole is the premenstrual black hole, which has a mountain’s mass but is smaller in size than a tiny atom. The Chinese nut will be the black hole of the Earth.
Intermediate black holes and micro black holes are also among the remaining types of black holes.
However, another question remains whether the black hole will remain like this for the rest of its life or whether there is an end to it. Stephen Hawking, a well-known physicist of the time, answered this question in his book A Brief History of Time. Evaporate) and that is why this theory is called ‘Hawking radiation.
Like Stephen Hawking, this constant effort by scientists to discover something new about black holes will one day unravel everything we are looking for.
