When human beings walk out of the earth, they are full of infinite yearning and exploration interest for the vast universe. Before human beings walked out of the earth, we thought that the earth was an infinite space, so big that there was no boundary. However, with the progress of human science and technology, our knowledge of the earth is also increasing, especially after walking out of the earth, we finally understand that the earth is just a very small planet.
In the past, we couldn’t really understand the meaning of the word smallness, but when we stand in the universe and see the unimaginable vastness of the universe, we really understand what is smallness. In front of the vast universe, the earth is small, and human beings are small. So how does the vast universe work? Does it have boundaries?
As a matter of fact, what scientists want to understand most about the mystery of the universe is the operation law of the universe. We should know that our solar system is very regular. The eight planets revolve around the central sun, and other asteroids will not run around, but have their own orbits. When we recognize the Milky way, we also understand that the solar system is not static, but moving around the center of the Milky way.
If we enlarge our view to the whole universe, will there be a center of the universe, and other galaxies and celestial bodies are actually moving around the center of the universe? For this conjecture, we can’t explore and understand it now, because the universe is too large, and the 93 billion light-year universe that can be observed by human beings at present may be just a grain of dust in the vast universe.
So before human beings have the ability to travel all over the universe and reach the center of the universe, can we not detect the rules of the universe? Of course not. In fact, we all know that the universe is made up of all kinds of matter from a macro point of view, and the matter is actually made up of all kinds of basic particles.
Since human beings began to enter the field of micro exploration, we have a preliminary understanding of the operating rules of the universe. From the microscopic point of view, the universe is composed of various basic particles, which indicates that the rules of the universe may also be determined by the basic rules of microscopic particles. So what are the basic rules of particles?
To uncover the mystery of the particle world, we need to magnify the particle many times, magnify a micro particle to the macro level, we can intuitively see the basic rules of the particle world. After scientists magnify the atom by tens of millions of times, a wonderful and mysterious world appears before our eyes.
And the magnified atoms also let scientists discover a secret, that is the basic operation law of the micro particle world. As we all know, atoms are very small. If we don’t enlarge them by tens of millions of times, we can hardly see how they work inside. In the enlarged atomic world, we first see the nucleus in the center, which is the focus of the internal mass of the atom.
We all know the law of universal gravitation. The matter in the macro world has gravitation, so the particles in the micro world also have gravitation. The nucleus occupies most of the mass of the whole atom, so other electrons need to move around it. This is very similar to the motion of galaxies in the macro universe. The solar system moves around the central sun, and the Milky Way moves around the silver center.
Since the internal world of atoms presents a very regular rule of operation, and this rule of operation has been verified in the solar system, the Milky way and other galaxies, does it mean that the whole universe may also be moving around the center of the universe? In fact, this conjecture has been made by scientists for a long time. Some scientists speculate that the center of the universe may also be an unimaginable celestial body, and we don’t know whether it will be a black hole or something else.
From the movement of electrons around the nucleus, we seem to see the basic laws of the universe. If this conjecture is correct, where is the center of the universe? This may start from the origin of the universe. According to modern scientific theory, the universe originated from the singularity explosion 13.8 billion years ago.
The location of this mysterious singularity may be the center of the universe, because after the big bang, it expanded rapidly at the speed of super light, thus forming a spherical universe with the singularity as the center. The most likely center of the universe is a black hole with a mass that we can’t imagine. Such a black hole may far surpass the black hole we know now.
Of course, some people have doubts about this: if the center of the universe is a black hole with mass beyond our imagination, the black hole should attract more stars and other celestial bodies, and then form a huge and bright accretion disk. If the accretion disk is bright, can’t we observe it? You know, the first picture of a black hole is from a supermassive black hole 55 million light-years away.
But now the situation is that we have not observed such a terrible black hole. Isn’t the center of the universe a black hole? In fact, many people have a misunderstanding that we can observe black holes, that is, we should be able to observe all black holes with strong accretion disks. But many people ignore a very important problem, that is speed.
We all know that the speed of photons is the speed of light. The reason why human detectors can observe stars, planets, black holes and other celestial bodies is that the photons emitted or reflected by these celestial bodies enter our detector’s field of vision. Only when our detectors receive these photons can we see some celestial bodies in the distant sky.
However, we should not forget that the expansion speed of the universe is different at different levels. According to the research of modern scientists, at the moment of the big bang, there was a very terrible and rapid expansion speed, so the initial huge universe could be formed in a short time. This speed is far faster than the speed of light. After the big bang, the expansion speed of the universe has also dropped sharply, but the expansion speed is still different at different levels.
Scientists believe that the expansion speed after the Big Bang is still faster than the speed of light, especially those galaxies formed in the early universe, which are far away from us faster than the speed of light. Therefore, we can’t observe these galaxies by relying on optical telescopes, because the speed of photons is slower than the expansion speed, so we can’t enter the field of vision of telescopes.
If this is the case, then there may be two cases of powerful black holes in the center of the universe. One case is that a large amount of material was produced at the moment of the big bang, and a large part of these materials remained in the center and evolved into an unimaginable big black hole. However, the speed of the big bang was far faster than that of light, so after the formation of the black hole in the center of light, there was no matter around it. The matter had left the center far away, and began to condense to form various celestial bodies and galaxies very far away from the center of the universe.
If this is the case, then the black hole in the center of the universe may have no accretion disk, only the original mysterious singularity. Although there is no accretion disk, its mass is the largest in the universe. Another case is that the black hole in the center of the universe also has an obvious accretion disk. However, because the expansion speed exceeds the speed of light, the energy photons emitted by the accretion disk can only travel at the speed of light, and can’t enter the field of vision of human telescopes, so we can’t observe them.
If this is the case, we can only study other types of astronomical telescopes, such as gravitational wave telescopes, with the further development of human science and technology. In this way, we can observe some powerful objects such as black holes, even if they do not emit light, they can also be detected by gravitational waves. If there is an unimaginable big black hole in the center of the universe, its strong gravity will produce a very strong distortion to the surrounding space. This distortion will produce obvious gravitational waves, which may be detected by us.
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