What exactly is a black hole? How are black holes formed?

There is a strange celestial body in the universe, its gravitational pull is so strong that even the fastest light can't escape from it, so people can't see it, and call it a black hole.

A black hole is not a physical planet, but an almost empty region of the sky. Black holes are the densest place in the universe, and if the earth becomes a black hole, it will only be the size of a soybean. It turns out that the matter in the black hole is not evenly distributed in this celestial region, but is concentrated in the center of the celestial region.

These substances have an extremely strong gravitational pull, and any object can only cruise around the periphery of this center. Once you accidentally cross the boundary, you will be pulled towards the center by a strong gravitational force, and eventually turn into powder and fall to the center of the black hole. Therefore, the black hole is a veritable space demon king.

The reason why there is such a strong gravitational pull inside a black hole is related to its formation. 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.

Since black holes cannot be seen or touched, how do astronomers discover and observe them? This is mainly explored through powerful X-ray sources in the black hole region. Although the black hole itself cannot emit any light, its huge gravitational pull on surrounding objects and celestial bodies still exists.

When the surrounding material is attracted by its strong gravitational pull and gradually falls towards the black hole, powerful X-rays are emitted, forming an X-ray source in the sky. By searching for X-ray sources, people can find traces of black holes.

A particularly dense dark object predicted by the general relativity theory of black holes. Massive stars collapse at the end of their evolution, and their matter is so dense that it has a closed boundary called the "event horizon", and the black hole hides a huge gravitational field that is so strong that any matter, including photons, can only enter and cannot escape. The lower limit of the mass of the nucleus of the formation of a black hole is about 3 times the mass of the sun, which, of course, is the mass of the last nucleus, not the mass of the star in the main sequence period.

In addition to this stellar black hole, there are other black holes - the so-called miniature black holes may have formed in the early universe, and the so-called supermassive black holes may exist in galaxies**.

A black hole is not a hole, it is a very dense substance, because even light is absorbed by it, so black holes are invisible. It is formed by the "death" of a star that is much more massive than the Sun.

If you think of a photon as a particle, the black hole should be dense enough to not escape at the speed of light. But in order not to let the black hole swallow everything, there must be a repulsive force to balance it. Neither of these forces have been discovered by humans.

If light is treated as an ordinary mechanical wave, any rapid absorption can become a black hole. From the implementation point of view, it is more concise.

In this way, black holes are also allowed on Earth, but not for long.

Rapid movement to the optomedium is a condition for the formation of black holes.

The most likely way for a black hole to form is a star**.

In layman's terms, when a celestial body escapes faster than the speed of light, we can't see it because there is no light coming out of it, and it looks like a black hole compared to the surrounding space, so astronomers figuratively call it a black hole.

A black hole is when a star or a plastid is so dense.

So much so that its radius is less than 2gm c2, then it forms a black hole.

Black holes are things that people can't see, and the causes are probably imagined that cannot be explained at this level.

Black holes are the most mysterious celestial objects in the universeBlack holes are the most mysterious celestial bodies in the universe as we know them, and we know very little about them. The black hole is a celestial body with extremely large mass and very small density, the mass is even greater than the mass of many stars, and the black hole also has a huge gravitational pull, which can attract all the matter around the black hole to the black hole, once captured by the black hole, no matter can escape, even the fastest light in the universe can not escape, it can be seen that the horror of black holes, it is precisely because of the particularity of black holes, and the limitation of human science and technology, so human understanding of black holes is almost zero, It also makes black holes the most mysterious celestial bodies. <>

The formation of black holes is specialThe formation of celestial bodies in the universe is relatively special, stars and planets are born in nebulae, and black holes are born on stars. Black holes are produced by gravitational collapse of stars with enough mass after the fuel for nuclear fusion reactions is exhausted and dies, that is to say, the greater the mass of the star, the greater the energy contained in the inner core, and the more powerful the black hole can be generated, but not every star will become a black hole when it dies, and the formation of black holes is also probabilistic, and the nearest black hole to us may be the sun that will decay in billions of years. <>

No one knows the inside of a black holeBecause of the particularity of the black hole, no matter can escape its gravitational attraction and will be absorbed by it, but we don't know what is inside the black hole, it may just be endless darkness, just like the ruins in ancient myths and legends in China, which can be swallowed infinitely; It is also possible that black holes are actually the beginning of the formation of another universe, attracting all matter and then creating a new universe; At the same time, it is also possible that black holes are actually the entrance to another universe, etc., human conjecture about black holes has never stopped, but limited by the level of human science and technology, can only stay on conjecture, but I believe that human beings will explore the secrets of the universe in the future. <>

This is the remains of a celestial body, and a black hole may form after the death of a star, and the real black hole should be a very high-mass object.

After the death of a more massive star, there is a high probability that it will become a black hole; Inside the black hole is a singularity that is not affected by forces.

It is formed by the constant space rotten star in space through ** and death, it may also be naturally formed, and it may be generated with the universe; At present, we have only found two kinds of black holes, and what is inside and behind it has not been well explained in our country.

The reason for the formation of black holes is that the dead stars are slowly formed after the collapse, but the mass of the star is required to be 20 to 30 times the mass of the sun, so that after the collapse, the black hole will be formed.

There are many things in our lives that we can't access, but that doesn't mean they don't exist. In our distant starry sky, there are many things that we cannot touch, and scientists will bring us all kinds of astronomical knowledge, such as black holes, black holes are very magical phenomena, and black holes give all kinds of mysterious colors. So, how is a black hole formed, roughly speaking, it is the generation of stars at the time of **, and the formation is related to the formation of neutrons.

At the same time, black holes are a group of very dense matter, they are naturally formed in the universe, not artificially intervened, and black holes have a strong attraction, so they are very dangerous. At present, from the perspective of science and technology, our cognition and understanding of black holes is still very small, and I believe that with the continuous development of human science and technology, we will discover more and more secrets of black holes. <

I have to say that there are still many things in our lives that cannot be explained, and this is the goal of our scientific struggle. Although they are not without the goals of each of us, they are closely related to the development of humanity. In the big family of the universe, we will find that the earth is so small, the solar system is so dangerous, and the people on our earth are even smaller.

So the universe is vast, we are only a small part of the universe, when standing in a very high perspective of our life, we will find that our life is actually very short, people face all kinds of difficulties, in fact, from this big point of view, in fact, nothing is a thing, it can be said that people's life is not how long a thing, do not cherish the present, cherish the happy time, cherish the time with the family, Every happy time is precious, we must know how to cherish it. <

A black hole is the gravitational collapse of a star, that is, the formation of **. When the gravitational pull of a star collapses, it forms a singularity, which is massive and dense.

The formation of a black hole is the collision of elements in each star, and in the process of collision, some energy is generated, so these energies form a black hole.

Slowly formed. Because there were no black holes at the beginning of the universe, black holes were formed by the slow convergence of matter after the birth of the universe.

A strong ** is formed, and some neutrons will be gathered and compressed, and the black hole is also like a celestial body.

The creation of a black hole is similar to that of a neutron star: when a star is preparing to perish, the core of a star rapidly shrinks and collapses under the force of its own gravity. When all the matter in the core turns into neutrons, the contraction process immediately stops, and it is compressed into a dense star, which also compresses the space and time inside.

But in the case of black holes, the mass of the star's core is so large that the contraction process goes on endlessly, and even the repulsion between neutrons cannot be stopped. The neutrons themselves are crushed into powder by the attraction of the squeezing gravity itself, leaving behind a material of unimaginably high density. The gravitational pull due to the high quality is such that any object that comes close to it will be sucked into it.

When a star ages, its thermonuclear reaction has depleted the center of fuel, and the energy generated by the center is running out. In this way, it no longer has enough strength to carry the enormous weight of the shell.

So under the weight of the shell, the core begins to collapse, and matter will march inexorably towards the central point, until finally a star with a near-infinitesimal volume and almost infinite density will be formed. And when its radius shrinks to a certain point (it must be smaller than the Schwarzschild radius), the mass-induced distortion of space-time makes it impossible for even light to shoot outward – and the "black hole" is born.

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. The creation of a black hole is similar to that of a neutron star, when a star is ready to perish, its core will quickly contract, collapse, or even become strong under the action of its own gravity.

The formation of a black hole is similar to the formation of a neutron star, when a star is preparing to perish, its core shrinks rapidly under the action of its own gravity, and a strong force occurs**. A black hole is a celestial body that exists in the universe in the modern general theory of relativity, and with human science and technology, it is impossible to detect what matter is in the black hole.

The creation of a black hole is similar to that of a neutron star, when a star is preparing to perish, its core shrinks rapidly under the action of its own gravity, resulting in strong force**.

When all the matter in the core is turned into neutrons, the contraction process immediately stops, and is compressed into a dense body, which also compresses the space and time inside, and in the case of black hole infiltration, the mass of the stellar core is so large that the process of contraction goes on endlessly, leaving a matter of unimaginably high density.

A black hole is a celestial body that exists in the universe in the modern theory of general relativity. The gravitational pull of a black hole is so strong that it is able to escape faster than the speed of light within the world. With the current science and technology of mankind, it is impossible to detect what matter is in a black hole.

According to scientists' current research and discoveries, most galaxies in the universe have a huge black hole at the center, which is millions of times the mass of the sun, and some can even reach tens of billions of times the mass of the sun.