13.8 billion years ago, the big bang happened. After the big bang, the universe did not quickly form various kinds of celestial bodies and galaxies, but initially formed various basic substances, such as hydrogen. However, in the matter formed after the big bang, in addition to visible matter, there is another invisible matter, that is dark matter.
In 1922, the astronomer Kaptan proposed that the motion of the star system can be used to infer the invisible matter around the star. In 1932, astronomer ault studied the motion of stars near the solar system. However, there is no conclusive conclusion about the existence of dark matter.
In 1933, astrophysicist zweiki used spectral redshift to measure the velocity of galaxies in the LHC relative to the cluster. Using the potential force theorem, he found that the velocity dispersion of the galaxies in the cluster is too high, and the gravity generated by the mass of the visible galaxies in the cluster cannot bind them in the cluster. Therefore, there should be a large amount of dark matter in the cluster, whose mass is at least 100 times that of the visible galaxies.
Although dark matter has not been directly detected, there is a lot of evidence that it exists in the universe. Therefore, scientists have no doubt about its existence. Although scientists all know that there is a large amount of dark matter in the universe, we almost know nothing about its essence. We don’t know what kind of particles it is composed of, whether we have discovered it or not?
Scientists have also put forward various conjectures about dark matter, so they have launched some detectors to detect and search for dark matter in space. For example, China’s Wukong is a dark matter particle detection satellite. But up to now, we still haven’t caught any dark matter in the universe. It may be around us, but because we don’t understand its essence, we can’t really find and catch them.
So what does dark matter look like? Recently, some scientists have put forward new ideas: in the latest issue of “physics review express”, there is a paper describing scientists’ latest views on dark matter. The author of the paper thinks that dark matter, which accounts for about 25% of the total mass energy of the universe, may be composed of extremely small light particles, and it is a kind of “hairy” matter. This view is somewhat different from the cognition of scientists in the past Same as.
In the past, scientists thought that dark matter might be a kind of “naked” matter, but new ideas thought that it might be “hairy”. This kind of “hairy” dark matter may have changed the course of the history of the universe, and created thin filaments rather than star systems in the early universe.
Dark matter is a kind of unknown matter all over the universe. It doesn’t emit light, so it’s called dark matter. But its gravity binds clusters together and causes stars on the edge of the galaxy to spin faster. Many scientists believe that most dark matter is cold, which means it moves relatively slowly. But some people hold a different view that it may be small and hairy, which means it will move quickly because of its lightness.
As a result, it’s more difficult for dark matter to get together than cold wimp dark matter. Fuzzy dark matter converges into long, sparse matter – filaments larger than those of cluster galaxies, so galaxies will be bigger or later born. The accumulation of dark matter in the center of galaxies will also become more difficult, which may explain why astronomers did not observe such clumps when looking at galaxies.
With the existence of dark matter, dark energy is indispensable, and the status of dark energy in the universe is more detached. Scientists guess that 95% of the matter in the universe is composed of dark matter and dark energy, and dark matter only accounts for 25%, so dark energy accounts for 70%. It can be seen that the real overlord of our universe is actually dark matter and dark energy.
Dark matter and dark energy came into being with the big bang of the universe. They may have participated in the construction and evolution of the whole universe. Scientists believe that dark matter has constructed the framework of the whole universe, while dark energy promotes the universe to expand outward continuously. Only by expanding to form a balance of forces can we have a stable and harmonious universe.
For human technology, dark matter and dark energy are hidden and invisible. But we can’t ignore their role in the universe. It’s possible that dark matter and dark energy are around us and exist independently of our visible matter. Some people even think that our universe may be divided into light universe and dark universe.
Visible matter makes up our visible universe, while invisible dark matter and dark energy make up the Dark Universe. The light universe and the dark universe are opposite and interact with each other. They live together very steadily. Some people think that there are many cracks in the universe, and these cracks may be the passage to the Dark Universe. It’s just that these cracks are too small to be seen only when they are magnified many times, so we need powerful energy to expand them if we want to enter the dark universe through the cracks.
The wormhole theory put forward by scientists may be a kind of passage to dark matter. The spaceship entering the wormhole may be entering the dark universe, and the velocity of space in the dark universe far exceeds the speed of light. Therefore, the spaceship entering the wormhole is like surfing, which can move quickly with the superluminal space flow to realize interstellar navigation.
Of course, everything about dark matter and dark energy is still unknown. Although scientists have put forward a lot of conjectures and opinions about dark matter, it is difficult to know what it is before we capture it? What does it look like, hairy or bald?
The universe is vast and vast. We can only see the tip of the iceberg with our naked eyes. Most of the secrets of the universe are still hidden from human beings. However, the power of science and technology is infinite. As long as human beings can continue to develop science and technology, there will be more advanced technology to solve all kinds of mysteries of the universe. It is possible that in the near future, scientists will completely uncover the mystery of dark matter and let it serve human beings. At that time, with the help of dark matter, human civilization could really enter the gate of interstellar civilization and become a member of the powerful civilization in the universe.
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