What exactly is a black hole in the universe? What exactly is a black hole in the universe

A black hole is a very massive object with almost no volume. Its gravitational pull can draw in all objects within a critical range around it, and even light is no exception. Black holes are the collapsed remnants of giant stars (at least 30 times the mass of the Sun).

Stars are very massive stars that emit light and heat. They release energy because they are undergoing a violent nuclear reaction. It is also because of this "**" that they maintain a large volume.

And any reaction is like burning, and there will always be a day when the fuel will be burned out. Nuclear reactions are no exception. When the fuel burns out, it "goes out".

At this time, due to its huge mass, according to the gravitational force, it begins to "collapse" under the action of the corresponding huge gravitational force. All the substance is squeezed towards the center. The density of the centers is increasing.

In the end, the atoms of matter were also crushed. It is further compressed. Due to the different masses of the stars, the gravitational force is of different magnitude.

The end result is not the same.

A star of mass like the Sun eventually crushes the atoms. Pressed the nuclei together. Such a stellar "remnant" is a white dwarf.

If a star as large as the mass of the Sun is 10 times. Eventually, gravity crushes the nucleus. And squeeze the neutrons together. Such a neutron star is called.

No matter how big it is. Like stars with more than 30 times the mass of the Sun. Finally, all the elementary particles are crushed. It became a "quark paste", a "point" with almost no volume. This is the mysterious black hole that can end time and suck in anything including light.

Generally speaking. It is a high-density celestial body formed by the collapse of a star after its demise.

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Problem description: What exactly is a black hole in the universe?

Analysis: A black hole is a star that is at least 10 times larger than the Sun, and for the remaining 10% of its life, it will gradually become hotter (and release more energy). Due to its own mass, it will generate a large gravitational force; As a result, a star can only rely on its own nuclear fusion to produce energy to balance its own gravitational pull.

But when its own energy is used up, its own gravity becomes the dominant force, and the lack of force to compete with it leads to the collapse of the star itself, resulting in a more complete collapse (when the mass of the star is smaller, the collapse is not so complete). A star the size of the Sun would only become a white dwarf, and a neutron star more than 8 times larger), thus becoming a point of infinite gravity and gravity. Any substance will be sucked in.

And because of its gravitational pull, even the fastest light in the universe can't escape. So, if the light is not reflected, we can't see it. Therefore, it is called a black hole.

Dark matter, like black holes, makes up about 90% of the total mass of the universe. They include white dwarfs, black dwarfs (that is, white dwarfs are completely cooled, but this will take about 100 million years), neutron stars, black holes, cosmic strings (which are the folds in cosmic space, where scientists estimate that there is no life), and so on.

Dark matter plays a large role, it is able to attach to galaxies or clusters of galaxies. Thus controlling the speed of expansion of the universe. If the dark matter is more than 99%, all matter will be restored to a point. Therefore, dark matter is also known as cosmic glue.

When you fall into a black hole, it may be due to the force of space-time distortion that will squish you in one direction and stretch you out in other directions until you look like spaghetti. But what exactly happens inside. Nothing is known to the current physics community.

As for its shape, you can judge it according to its own characteristics, when the black hole is still a star, the maximum force of its collapse is in the center, because the force borne by the center is the largest, and it is outward in turn, so the shape of the black hole is likely to be a funnel-packed celestial body. But the reason why a black hole presents a funnel is because its body, that is, its own matter, because of its large mass and small size, produces a strong gravitational pull that distorts space-time, so it looks like a funnel.

As we all know, black holes are the most mysterious stars in our observable universe. It can be said that black holes are ubiquitous, and there is a high probability that there will be black holes in every corner of the universe; Naturally, different black holes are very threatening.

Most people think of black holes, perhaps, a giant in cosmic space will flash in their minds, stretch out their bloody mouths, avoid them, and swallow all the chemicals and stars; However, we need to understand that more than 50% of black holes are all small black holes, which are actually not destructive.

When massive stars die, black holes are created. Once the stars run out, gravity will definitely have an advantage. As a result, the star gradually collapses inwards in a large way, and finally a black hole is created!

A black hole is not really a hole, just a star. This is simply because the black hole devours all the objects that come close to it, containing light and information, and this kind of object cannot break free. Therefore, you can only see black holes, and the mass of the initial black hole can be equal to or lower than the mass on Earth.

It is likely that this purely fabricated object was produced by the gravitational collapse of an area with high density during the eruption. A stellar-mass black hole has a mass of about 4 to 15 solar masses, and it is caused by a critical collapse at the end of the life of a massive star, and in fact it may be a myriad of intermediate-mass solar mass black holes. Rough direct evidence suggests that they are likely to exist in some star clusters and eventually grow into supermassive black holes.

Supermassive black holes have solar masses between 106 and 109 and are located in the management centers of most large and medium-sized planets. Black holes, like neutron stars and white dwarfs, are also the material in which stars evolve. The only difference between them is that they are all materials that evolve from stars of different mass, where black holes are material that evolves from supermassive stars.

In general, everyone understands that stars ignite themselves, like furnaces.

A star that has just entered the main coding sequence to worship ignites a proton. This type of ignition is called a nuclear reaction, and because the mass of the star is particularly high, gravity can make the star management center particularly hot, which can be understood as the result of extrusion. In the case of sunlight, for example, the critical temperature can reach 15 million degrees.

The greater the mass, the greater the gravity, and the critical temperature can be achieved at higher temperatures.

All in all, black holes play the role of "scavengers" in the universe. For hundreds of millions of years, they have been constantly "eating" to maintain the stability of the cosmic order.

Black holes are remnants of stars that have ended their lives in the form of supernovae. They are characterized by a region of space in which gravity is so strong that not even light can escape.

It's a magical existence, and it's something that can't be explained in words, but it's been there for many years.

I think black holes in the universe should be very empty, and the kind that has no end, it should be black, and it should be endless.

The black hole is a particularly powerful existence, it is also very mysterious, and it does not know its true face, as long as the objects around it may be absorbed by it.

There is no consensus at this time.

Black holes have an event horizon, from which classical gravitational theory says that nothing within the event horizon can escape. So, in principle, we can't know what's behind the horizon.

At the center of the black hole is a space-time singularity. In the classical theory of gravity (general relativity), we can no longer describe this singularity mathematically. However, there is a lot of speculation, one saying that a singularity is a singularity and does not represent anything else.

Another theory is that the singularity of the black hole connects to another universe, which may be our parallel universe or a completely different universe. Others say that this singularity is a wormhole that connects the rest of our universe.

Is this a question that science has not yet explored, or a mystery, and if there is an answer, it is all speculation.

No one knows what's inside, because all the scientific theories we know now are invalid inside black holes. So it doesn't define what's inside a black hole.

Floating gravitational dust aggregates.

Nobody knows what it is, scientists are guessing.

Just go in and see.

Black holes are currently understood to be a celestial body in the universe, where our existing laws of physics will be fragmented, which makes it quite difficult for us to understand it. However, black holes can be confirmed by hundreds of years of long-term certification, and there are indeed black holes in the universe.

In Einstein's general theory of relativity, the universe is like a tight rubber film, and every object with mass on it will dent the film, and the more massive the dented object is.

Now, what if you had a bag of glass balls and stacked the whole bag of glass balls on top of the same point in the rubber sheet?

If the film is elastic enough, there will be a deep pit in which all the glass balls will collect, and if the film is of inferior quality, it will crack.

Very fortunate that the quality of this film of the universe is still quite good, space-time will not break, but will form a deep pit, that in a very small space to gather huge energy and mass, this deep pit is a black hole, the gravitational pull of the black hole is very large, space-time distortion is very serious, so that even light can not escape, such a dense field, in which Einstein's general theory of relativity fails.

The image below is a good metaphor for a black hole, when the boat passes past a certain point, and the current is very strong at this point, and the boat does not have the speed to escape from this point, then there is no going back. Note, however, that the image below is a two-dimensional representation, while the black hole is three-dimensional.

What are the secrets of black holes in the universe?

Black holes are formed by the collapse of massive stars, in the early days of the universe, by a very large number of supermassive stars, we know that the larger the star, the shorter the lifespan, because the larger the star, the greater the gravitational pull, and soon the star will not be able to resist the huge gravitational force and collapse, under the action of gravity, the star burns itself faster and faster, and eventually a supernova **, most of the matter is blown out, forming galaxies, nebulae, and the debris in the center will form neutron stars or black holes, A black hole is an extreme celestial body, and no light can escape within a certain range, and it is completely dark, and this range is called the event horizon. The light outside the event horizon is bent so that the starry sky behind the black hole is revealed, and the black hole pulls a curtain of light with a huge gravitational pull, and we usually only find this invisible giant when it devours the star.

Black holes have an extremely important impact on the universe, and there are two futures for the universe, one of which is that the giant black hole makes the universe end again and return to a singularity. However, the latest theories suggest that black holes also evaporate slowly, in the form of Hawking radiation, which roughly means: in"Vacuum"According to Heisenberg's uncertainty principle, a pair of positive and negative virtual particles will be created out of thin air in an instant, and then disappear instantaneously to conform to the conservation of energy.

Outside of the black hole horizon, it is no exception. Stephen William Hawking speculated that if a pair of virtual particles were created outside the black hole, one of them would be attracted into the situation, while the other would escape. If this is the case, the escaping particle gains energy, and does not need to be annihilated by the opposite particle, and can escape to infinity.

From the outside, it looks like a black hole emits particles. This conjecture was later confirmed, and this radiation was named"Hawking radiation"。Since it is carrying energy outward, it absorbs part of the energy of the black hole, and the mass of the black hole will gradually decrease and disappear. It also brings information outward, so it doesn't violate the law of information.

So the fate of the universe is now more likely to be torn apart.

The most attractive thing about black holes is that within the horizon, within which we have infinite possibilities, traveling through the past and the future, and crossing the borders of the universe, with infinite charm.

The structure model of the black hole in the universe is solved.

The central singularity structure model in the black hole is solved.

The numbers in the figure represent the smallest unit of indivisible positive and negative chord information - string bits

Famous physicist John. John Wheeler famously said, "It from bit."

After the development of quantum information research, this concept was sublimated to the point that everything originates from qubits) Note: Bits are bits.

I think there is nothing on the other side of the black hole, and everything that is inhaled will be torn apart by the speed inside, including light, physical objects, etc., all of which are converted into a particle, integrated into the black hole, and become a part of the black hole.

There is no time, no space, and it is difficult to tell what kind of situation or state the black hole exists, one-dimensional, two-dimensional, or three-dimensional, no one knows, and humans will never know, because if humans try to get in, then it is impossible to come out. The person who went in couldn't say she was alive or dead, because once he was inside, the whole person didn't exist.