Dec 12, 2020 22:00:00

Three reasons why black holes are 'the scariest of the universe'

A black hole that distorts space-time due to extremely strong gravity is a symbol of destruction in outer space, known for being 'incapable of escaping even light.' Professor Emeritus Chris Impey of the University of Arizona's Faculty of Astronomy, who has served as Vice President of the American Astronomical Society, explains three reasons why such a black hole can be called 'the scariest of the universe.'

The scariest things in the universe are black holes – and here are 3 reasons

https://theconversation.com/the-scariest-things-in-the-universe-are-black-holes-and-here-are-3-reasons-148615

Roger Penrose, who proved the formation of black holes by Einstein's general theory of relativity , and Reinhard Genzel, who revealed the existence of a supermassive black hole with a mass about 4 million times that of the sun, at the 2020 Nobel Prize in Physics. and Andrea gate's has been awarded to Mr., research on black holes can be said that it has high degree of attention. Professor Emeritus Impey, who has been studying black holes for more than 30 years, which is generally known to 'swallow even light,' said, 'Black holes are scary for three reasons.' I explained the reason.

◆ 1: When sucked into a black hole, it falls apart and dies
A black hole is a graveyard for all objects that cannot escape even light. According to Professor Emeritus Impey, if a black hole is sucked in, it will be torn by strong gravity and the bones, muscles, sinuses, and even the molecules of the body will be separated, which is called 'spaghetti'. It is being considered. In addition, spaghettiization is a concept that has gained general recognition as it was introduced in the book ' Hawking, Talking about the Universe ' by Dr. Stephen Hawking , a world-renowned physicist, and in October 2020. Is actually observed at the moment when a black hole turns a star into spaghetti and swallows it.

You can capture the moment when a black hole 'spaghetti' a star and swallow it --GIGAZINE

◆ 2: Emit high-energy radiation
Hubble Space Telescope observations over the last three decades have shown that black holes are present in the center of almost every galaxy. According to recent research, quasars, which are considered to be the brightest in the galaxy, are thought to emit light with a black hole located in the center of the galaxy as an engine.

According to Professor Emeritus Impey, the brightness of quasars is caused by the fact that black holes emit a large amount of radiation when they attract nearby stars and gas by gravity. Regarding this brightness, Professor Emeritus Impey said, 'If you think of the light emitted from the light sources in the city's houses, cars, and streets as the light emitted from the stars in the galaxy, the light emitted from the quasar. Is equivalent to hundreds or thousands of times the brightness of the light emitted from the entire city. ' Regarding the radiation that causes this light, he says, 'In addition to the danger of being attracted by gravity and falling apart if you get too close, there is also the possibility of dying from high-energy radiation.'

The black hole located in the center of the galaxy is thought to have important implications for the formation and evolution of the galaxy, and in 2019 it helped to form stars by injecting high-energy gas. The existence of possible black holes has been confirmed.

A black hole that injects high-energy gas and grows stars across multiple galaxies is discovered --GIGAZINE

◆ 3: Possibility of being trapped forever without dying even if inhaled
The heaviest black hole ever discovered is located in the center of the giant galaxy Holm 15A, which is 40 billion times the mass of the Sun and has an outer edge at half the speed of light. It is estimated to be working. According to Professor Emeritus Impey, such a large-mass black hole has stronger gravity than a normal black hole, but has a weaker pulling force, so it may 'survive' if inhaled. thing. If they survive, they will fall into a state where they cannot escape due to gravity and cannot be helped by sound waves or radio waves.

Professor Emeritus Impey quoted ' Hawking radiation, ' which is the theory that Dr. Hawking advocated that black holes eventually disappear by emitting elementary particles. 'At least by the time the largest black hole disappears. But it will take 10 ¹⁰⁰ years, 'he said, saying that black holes will continue to exist after all the stars in the universe have died.