We haven t detected dark matter, so why do we think it exists?

According to the law of conservation of energy, the lost unobservable energy must be transformed into something we don't know, and I can give him a vague definition of dark matter. So it must exist, but the current science and technology can't find it, and we still need to continue to work hard to unveil it one day.

This is inferred from the energy balance equation, because energy is certain and cannot disappear or appear, so there needs to be negative energy at the same time as positive energy to balance. This is dark matter.

Because we have a lot of theorems and laws, such as the law of conservation of energy or the law of gravity, that we use to infer its existence and explain a lot of other problems.

Although we have not detected dark matter, according to scientific research, bringing dark matter into some unreasonable and difficult to solve problems may correct the loopholes in this problem, just like the modified gravitational theory, although it cannot be detected, dark matter is very likely to exist.

Because scientists have detected the existence of dark matter according to the law of conservation of mass, it may be that in the future, our technology will get better and better and will be able to manifest dark matter.

Dark matter is a substance that people can't see. Due to the reflection or refraction of visible light, people's naked eyes can perceive the presence of certain substances, whereas dark matter is not reflected or refracted with visible light, so people naturally cannot directly perceive their properties. Through years of research, the scientific community can confirm some of the fundamental properties of dark matter.

Dark matter does not emit light automatically. Dark matter cannot reflect or refract light, that is, it has no effect on photons. Dark matter does not collide with stars or galaxies.

If they collide with a star or galaxy, violent and observable physical phenomena occur.

There are four types of interactions in nature. Dark matter as we know it has mass, it participates in the interaction of gravity, but not in the interaction of electromagnetism, so it does not emit light or reflect light; Dark matter does not participate in strong interactions, so the penetration is very strong, and the probability of a reaction between visible matter particles is very small.

For physicists, it makes sense to study dark matter, because the density and amount of dark matter will determine the ultimate fate of the universe. The greater the mass of matter in the universe, the more effective the gravitational pull will be, and the more likely it is that the universe will contract at a critical point. If the universe were in a state of contraction, it would inevitably return to a hot, high-density singularity.

Dark matter exists. Although we can't see them, we can get some definite results through the observation and calculation of natural phenomena. As long as they exist, what exists must interfere with other living beings.

We can infer their existence by studying these interference phenomena.

Based on the general theory of relativity, scientists are right, and then they can detect the mass distribution of matter by gravity. However, if there are some flaws in general relativity that need to be corrected, and once corrected, the observations and theories match each other, there is no need to introduce dark matter. Then the dark matter hypothesis would not have to exist.

The gravitational pull provided by dark matter is very important, and gravitational drag occurs when an object passes through dark matter, but it is not found in actual observations. Some scientists have questioned the inaccuracy of methods for estimating the mass and quantity of black holes at the center of galaxies, which has led to errors in our estimates.

Because scientists have already had a preliminary understanding, and scientists have always suspected the creation of this substance, because after the creation of this substance, there will be these subsequent inferences.

Because there are many unknown secrets in the world and the universe, in addition to visible light, you will feel a lot of electromagnetic waves, and there will be many abnormal phenomena due to gravity.

Scientists work through the laws of the planet's movements, and then through calculations, that dark matter exists.

With the deepening of human research on the universe and the expansion of the scope and field of exploration, we have carried out more and more precise exploration and speculation on some details of the development and evolution of the universe on the macro scale, and on this basis, we know the origin of the universe, the accumulation and evolution of matter, galaxies, stars and other characteristics of the universe. However, the lack of mass in the remake universe and other phenomena that simulate the evolution of the universe have long puzzled scientists, and in order to solve these mismatched problems, the concept of dark matter was proposed.

If dark matter cannot be observed, why are we so sure of its existence? Gravitational lensing. When a galaxy becomes a target, if there is a massive object on the same line as the observer, according to the principle of relativity, the light from the target's galaxy will be bent as it passes through the massive object, so that one or more star-like things of the target will be seen from the observer's angle, as through a lens.

We can infer the mass of an object from the characteristics of the image we see. In many of our observations of the target galaxy, we did not see any massive objects in the line of sight, but the presence of gravitational lensing suggests that there must be a very large massive object in between. High-temperature gas radiation.

Our goal is to be able to measure the temperature in different regions of the galaxy from different locations by looking at the spectral signatures from different locations in the galaxy, and then derive the gas density and the corresponding pressure, <>

Assuming that these gaseous substances are bound by a certain gravitational force and reach a hydrostatic equilibrium accordingly, the mass distribution of galaxies can be estimated from the model. Kinematic features of the Milky Way. According to the law of gravitation, every star in a galaxy rotates periodically around the center of the galaxy with a certain proportion of its velocity and distance from the center of the galaxy.

Scientists can calculate the total mass of a star based on the velocity of the objects in the galaxy. Later observations of many spiral stars outside the chronological system showed that their moving nuclei were too fast to be supported by the gravitational pull at the center of the galaxy.

The assumption that the speed at which a spiral galaxy moves around the center of the galaxy with stars of different radii – i.e., the galaxy's rotation curve – remains true in the absence of dark matter. Therefore, the current theory of Newtonian dynamic filial piety should be modified when it is applied to be more cautious than long-distance, so as to replace the hypothesis of dark matter. But scientists have not been able to verify it until they see it.

This is because the universe is constantly expanding and producing a lot of dark matter, and these dark matter will affect the planets and galaxies in the universe, so although it has not been detected, it can still be determined that it exists.

It is because according to the deficit many studies have shown that dark matter does affect some scientific phenomena of cherry blossoms, whether it is from the naked eye or sensitive optical instrument observation, some things can always be found, so it is believed to exist.

Because dark matter does not participate in electromagnetic interactions, astronomers have discovered that the stars around galaxies run faster and cannot detect any additional gravitational attraction, so hail cracks call it dark matter.

Because the operation and mass of many things have the same proportions as Zheng Oak and some not-so-nonsense shouting, then there may be some things between them that we don't know much about, and these things are called dark matter.

Because according to Gao Qing's many research confessions, secretly digging up substances does affect some scientific phenomena, whether it is from the naked eye or scattered oranges is dull optical instrument observation always finds some substances, so I think it exists.

Dark matter cannot be seen or touched, but scientists are very sure that it exists, because there are four forces in the universe, namely weak interaction force, gravitational force, electromagnetic interaction force and strong interaction force. These 4 forces are very common in people's lives, such as gravity, which can make the earth revolve around the sun. Scientists have found that stars run relatively fast through observation, which is contrary to our understanding, and in addition to gravity, there is another thing, which is named dark matter by scientists.

Therefore, scientists can infer unknown substances through known substances, and it may be that when the technology is more developed, people will be able to really see this kind of thing.

Dark matter does not interact with electromagnetism, it is a relatively special substance, and it is not known whether it has a physical or intangible substance. We can imagine that if you hold a rope and tie a stone, and then keep turning it, it will make the gravitational force of the stone increase more and more, and when the gravitational force reaches its maximum, the stone may break away from your hand and fly out in one direction, which is what we call gravity. The same is true for stars in galaxies as they move, and as they get faster and faster, they may leave the gravitational pull.

However, the star does not detach, indicating that there is an opposite force at work, which is much lower than the gravitational force and is invisible. Then scientists made all sorts of explorations and thought it was dark matter.

Scientists have put forward various conjectures about this substance, among which the most mainstream is the cold dark matter model. The energy mentioned here refers to the fact that the flow of dark matter is relatively slow, but the power contained in it is relatively large. The implication is that this kind of thing is not visible, and does not participate in the electromagnetic action that people know.

There may be a lot of things passing through every second, but the human body cannot be felt or seen by humans, and this is the limitation of science and technology. If one day a glasses were invented that could see dark matter clearly, people would find that there are many special little objects in the air of life.

The exploration of dark matter is still theoretical, and there is no substance.

Scientists are based on the fact that the general theory of relativity is correct, and only then can gravity be realized to detect the mass distribution of matter. But if there are some flaws in general relativity that need to be corrected, and once corrected, the observation and theory match each other, and there is no need to introduce dark matter. Then the hypothesis of dark matter would not need to exist.

They also came to the conclusion based on a certain amount of research, so that they were able to determine that dark matter also exists.

Although they cannot be seen or touched, they can be inferred from the existence of other substances.

No, it is because such substances are real, and although there is no way to be sure, there are many material mismatches.

Dark matter is real; The main reason why it is difficult to find it is that it is located at the edge and in the outer space between the stars, because the infinite physical matter of the universe is composed of many galaxies and stars, and at the edge of the galaxy, the dark matter orbiting celestial bodies are wrapped in outer space.

It's real. This is because the universe is very large, and it is particularly difficult to discover the dark matter in the universe, which is like looking for a needle in the sea, and the current science and technology have not reached such a point.

exists, because this substance is in the distant outer space, which we are difficult to see, know and are also limited by science and technology.

From the perspective of an astronaut, all stars are floating in space, what is the force that makes so many stars float in the air, not colliding, not merging, not separating? Always in a state of if-and-leave?

The reason is simple, and that's the dark matter we've been looking for.

Air molecules are very stable, regardless of external factors, the distance between molecules is relatively stable, and only changes under external conditions such as pressure, temperature, etc. What is it that allows air molecules to maintain such a stable relationship?

The reason is simple, and that's the dark matter we've been looking for.

The rotation of the sun is how it drives the revolution of the surrounding planets? Again, the answer is dark matter.

How can we prove that the Sun revolves the planets through dark matter? It's simple: the precession of the planet's orbits.

Since the density of dark matter is inversely proportional to the square of the distance to the Sun, the change in density causes the forces on the perihelion and aphelion of the planet to be different, and the precession of the planet's orbit is the closer to the Sun, the flatter and more obvious the orbit, such as the precession of Mercury's orbit.

What is dark matter?

When we compress air, excess dark matter will be released in the air due to the change in density, which we observe on a macroscopic basis is called "heat".

Heat is energy, a gaseous substance. The sun emits heat outwards and turns into matter in the outer reaches of the solar system, which is the cosmic rays and energetic particles that we can detect. Just like the water vapor on the earth turns into rain, snow, hail and ...... in the sky

Matter and energy are cyclic and can be converted into each other. Energy is invisible dark matter.

Dark matter is the propagation carrier of light, magnetism, electricity, gravity, etc., which is also the reason for the change of the propagation speed of light in the medium, and the refractive index of matter is different because of the different densities of the dark matter inside.

Each object has its own dark matter field around it, and the density of the field is inversely proportional to the square of the distance to the object.

Gravitational force is the buoyant force of one object in the dark matter field of another object. Buoyancy is generated instantly, but propagation takes time. For example, if we jump into the deep sea, we will immediately become buoyant, but our impact on the bottom of the sea will take time.