What are the causes of black holes? What causes black holes?

After the death of a supermassive star (supernova**), it becomes a white dwarf and further collapses into a neutron star (pulsar), and because the mass is too huge (greater than or equal to 10 solar mass m days, I can't remember if it is 10 >), the neutron star cannot resist the constraints of gravity and collapses violently again (implosion), and finally forms a black hole (black hole) that even light cannot escape!

A star with a mass of more than 20 times that of the Sun is generally still more than twice the mass of the Sun after a supernova explosion. The gravitational pull of this part of the matter is very strong, resulting in a sharp collapse. Although there is also some pressure to resist the collapse inside during the collapse process, in the face of such a strong gravitational force, it is tantamount to a mantis arm blocking the car.

As the collapse intensifies, molecules, atoms, and even nuclei are squeezed out, eventually forming an extremely dense center of gravity.

1. Sudden changes in the interior of celestial bodies (especially stars) are not sufficient to maintain the status quo; (explosive).

2. The energy of celestial bodies (especially stars) is not enough to maintain the status quo; (Gradient).

3. Due to mass and energy reasons, the gravitational force and repulsion force are uneven, affecting the trajectory of oneself and the external and surrounding celestial bodies to be chaotic and accidents; (It can be accidental, suicide, collision, etc.).

The mass is large enough and the volume is small enough.

The black hole is not a tomb for a celestial body, but a Sakura ho body for a celestial body. When a star is about to die, it spines hail to form white dwarfs, neutron stars, and black holes, which are arranged according to the mass of the star from small to large. In other words, not all stars die to form black holes, and only more massive stars become black holes after they die

The death of stars, like their birth, collapses under their own gravity. This collapse creates new stars at the time of star birth and black holes at death.

Matter is made up of molecules, and molecules are made of atoms, but atoms are not the smallest substances, and there are nuclei in atoms, and there is a substance called neutrons in the nucleus. Matter is like that, layered like a matryoshka doll, small substances are constantly layered to form large substances, and large substances continue to be layered to form new substances.

After the death of a star, it will continue to collapse, but this collapse will not stop until the material in the core of the star has become neutrons.

The extremely high mass of the black hole also generates a great gravitational pull, so even the fastest light will be attracted and swallowed by the strong gravitational pull of the black hole once it gets close to the black hole.

I think that black holes have infinite gravitational pull, and even light can't escape, which means that there is no time in black holes.

- The formation of black holes

The formation of a black hole begins with a star that is about to die, so the question is, what will happen to this star after it dies? Stars after their demise, due toThe star's own gravity begins to contract and **, and then fusion occurs, and time and space inside the star are compressed, which in turn forms a black hole.

Because stars are so massive, they are produced when black holes formThere is a huge gravitational pull, so it will start to draw in anything that comes close to it, and the light in it will not be able to shoot outward, hence the name of the black hole.

<> time is still stuck in the time when the black hole was born, and there is no space without time, and space is still stuck in the space when the black hole was born, that is, time is always stuck in that moment.

- The discovery of black holes.

Now that we know how black holes are formed, how are black holes discovered? The time goes back to 1916, when the German astronomer Karl Schwarzschild didA vacuum solution to Einstein's equations was obtained, but it was this solution that showed that if the actual radius of a static spherically symmetric star was less than a fixed value, some strange phenomena would occur around it, which would be equivalent to the existence of an interface from which even light could not escape as fast. This interface was later named "black hole", which was also the first time that the concept of black holes was proposed.

But at that time, it was not possible to observe black holes very closely, and this obtained was only a theoretical phenomenon, and in order to be confirmed, it was necessary to be observed that such celestial objects actually existed. However, on April 10, 2019, the EHT International Partnership photographed the first black holeIts mass is 4 million times that of the Sun, so you can imagine how great its gravitational pull is.

<> it is a closed celestial body, no other matter can enter it, and the contents of it cannot escape.

- The significance of the discovery of black holes

The discovery of black holes is undoubtedly a big step in the process of human exploration of the universeHow small our earth is for the whole universe。Batch after batch of great scientists are still on the road of exploring the universe, andEvery time humanity makes an important discovery, it is a big step forward for the exploration of the world, and this is the meaning of black holes.

YetBlack holes are only a handful of the universe, and we humans still have a long way to go on the road of exploring the universeI believe that in the near future, one great discovery after another will appear in our sight, and our understanding of the universe will become clearer and clearer.

Black holes are created by the gravitational collapse of a massive enough star after it runs out of fuel for a nuclear fusion reaction and dies.

1.The reason for the formation of a black hole is more like that of a neutron star, which occurs when a star is about to die**, and the matter in the core is compressed into a dense body, and the internal space and time are compressed at the same time to become a black hole. A black hole is a very dense substance, not only does it have a strong gravitational pull, but the event horizon escapes faster than the speed of light.

2.The reason for the formation of black holes is more similar to the creation of neutron stars, which occur when a star is about to die. Stars contract rapidly under the influence of gravity in the universe, and then **, when all the matter in the core is compressed into neutrons, the contraction of the star will also stop immediately.

Stars that stop shrinking are compressed into dense stars, and the matter in the core is compressed into dense shapes, compressing the space and time inside the star, thus forming black holes. A black hole is a high-quality, high-density substance that generates force that can suck anything that comes close to it in.

3.A black hole is a very dense substance, a naturally occurring celestial body in the universe, which not only has a strong gravitational pull, but also escapes the event horizon faster than the speed of light. A black hole is a celestial body with a curvature of space-time that makes it impossible for light to escape, so a black hole is black because it sucks light in.

The creation process of a black hole is similar to the creation process of a neutron star, when a star is about to perish, its core will quickly shrink, collapse, and even become strong under the action of its own movement.

Black holes are presumed to be formed from extremely massive and extremely dense celestial bodies. But this is only speculation, because current scientific and technological means cannot accurately observe and study black holes.

According to the current understanding of black holes, black holes are the end of stellar evolution, which explode in the form of supernovae and then collapse sharply, resulting in the formation of ultra-dense stars and black holes. Black holes are so gravitationally strong because of their ultra-high density that even light cannot escape their gravitational pull, so they cannot be seen directly.

It is speculated that black holes are remnants of dead stars that were created when a special massive supergiant collapsed and contracted.

Black holes are very dense planets, absorbing everything, and light cannot escape. (Now some scientists have analyzed that there are no black holes in the universe, which needs to be further proven, but we can have different opinions academically).

Black holes have a huge gravitational pull, and even light is attracted to it and cannot escape. There is a huge gravitational field hidden in a black hole, and this gravitational force is so great that anything, not even light, can escape the palm of the black hole. Black holes do not allow anything within their boundaries to be seen by the outside world, which is why such objects are called "black holes".

We cannot observe it through the reflection of light, we can only know about the black hole indirectly through the surrounding objects affected by it. That being said, black holes have their boundaries, both event horizons and speculations that black holes are remnants of dead stars that were created when a special massive supergiant collapsed and contracted. In addition, a black hole must be formed by a star with a mass greater than the Chandrasekhar limit at the end of its evolution, and a star with a mass smaller than the Chandrasekhar limit cannot form a black hole (see also:

A Brief History of Time – Stephen Hawking).

Usually, stars initially contain only hydrogen, and the hydrogen nuclei inside the star collide with each other and fuse.

The energy produced by fusion competes with the gravitational pull of stars to maintain the stability of the star's structure. Fu Xun.

As the fusion of hydrogen nuclei produces a new element, helium, helium atoms also participate in fusion, changing their structure to form lithium.

By analogy, according to the order of the periodic table, beryllium, boron, carbon, nitrogen, etc., will be formed in turn, until iron is formed, and the star will collapse.

Iron is present inside the star, causing the star to not have enough energy to compete with the gravitational pull of the massive star, causing the star to collapse and eventually form a black hole.

Extended Information: Classification of Black Holes:

According to the physical characteristics of the black hole itself, mass, angular momentum, charge division, black holes can be divided into five categories.

1. A black hole that does not rotate and does not carry an electric charge: its space-time structure was discovered in 1916 by the historical god Yin Vasi, and is called the Schwarzschild black hole.

2. Non-rotating charged black holes: called r-n black holes. The spatiotemporal structure was developed by Reisner and Naztun in 1916-1918.

3. Rotating uncharged black hole: called Kerr black hole. The structure of space-time was found by Kerr in 1963.

4. General black hole: called Kerr-Newman black hole. The structure of space-time was developed by Newman in 1965.

5. Binary black holes: black holes that orbit each other with other black holes.

How does a black hole come into being when it is dismantled and burned? then fight.

There are generally three destinations for the aging and death of stars: one is a white dwarf, the second is a neutron star, and the third is a black hole.

Stars with masses less than the Chandrasekhar limit can only form white dwarf algorites, and those with masses greater than this limit have a chance to form black holes.

A common feature of their formation is that their nuclear transformation is not enough to overcome their own gravitational pull and cause the rotten ridge to collapse. The difference is that the degree of collapse is not the same. From white dwarfs to neutron stars to black holes, the degree of collapse increases in order (because the greater the mass, the greater the gravitational pull, so the degree of collapse is also greater), so the density also increases, and when it collapses to the Schwarzschild radius, a black hole is formed.