Is the Sun getting closer and the Moon farther and farther away from us?

The Sun will swallow the Earth in another 5 billion years, but not because the Earth is approaching the Sun, but because the Sun will erupt into red giants in 5 billion years, and the Moon will be moving away from us at an annual rate. But obviously humans can't feel it.

Let's talk more about why the moon is moving away from us.

The distance between the Earth and the Moon is expanding at an annual rate. However, these are basically two different things from the expansion of the universe. Calculations will find that the Earth-Moon distance grows at a rate of equal order of magnitude to the rate at which the Earth-Moon distance grows (doubling the radius every 100 years) is exactly the same as the rate at which the universe expands, but this is only a coincidence!

The moon's move away from the earth is due to the influence of tidal forces. When the moon moves to a certain position, her gravitational pull to different places on the earth is different, causing the sea water to rush in the direction of the moon, and the water level in other parts of the ocean drops, so that there is a huge friction between the sea and the land due to the relative motion. This friction is like the brakes of a car, slowing down the Earth's autobiography, as if the Earth had experienced a brake.

However, the inertia of the Earth is quite large, and its rotation period of 62,500 years is only 1 second. As the Earth's self-rotation slows, the Moon will gradually move away from the Earth according to the "Law of Conservation of Angular Momentum"!

Of course, the expansion of the universe will also lead to an increase in the distance between the Earth and the Moon, but in the small system of the solar system, it is gravity that plays a dominant role rather than the so-called "cosmological constant" that causes the expansion of the universe, and the cosmological constant begins to play a significant role in the solar system, at least 1 billion years later.

Oh? The sun is getting closer and closer to us, and the moon is getting farther and farther away from us.

But you will never be able to see it.

The Moon is getting farther and farther away from us at a rate of 2 centimeters per year.

In another 5 billion years, the Sun could engulf the Earth.

Of course, you can't feel it now.

What you see is just an illusion.

Since the first floor says so, it is something else that causes the illusion.

As for the moon, I think it's because there are more and more lights that block the moon's rays?

Or is there too much exhaust gas emitted now, and there is a layer between our line of sight and the moon, so the moon lines can't be seen clearly?

In addition, when I was a child, my eyesight was better!

It's sunset.

Due to the moisture (quite the effect of a magnifying glass).

Seeing the sun is bigger than normal.

Small changes are not noticeable.

Psychological. It's a matter of worry.

Everyone knows the reason why the moon revolves around the earth and is submerged by the tide because of gravity. The Moon is slowly moving away from us, and this is also due to gravity.

When the Moon revolves around the Earth, the gravitational force is different everywhere because the celestial body is not the center of mass. This is less noticeable compared to the Moon, but this effect will be especially severe due to the large amount of water on the Earth's surface. The daily drop in moisture on Earth is caused by the Moon's gravity, which may have a certain delaying effect.

Over time, this can have a certain braking effect on the rotation of the Earth, so the angular momentum of the entire Earth-Moon system will be retained and will not run out for no reason. It certainly doesn't disappear for no reason. This force will be transferred to the Moon's angular momentum, moving the Moon away at a rate of centimeters per year.

The Moon orbits the Earth in an elliptical orbit with an average of 10,000 kilometers. Many people will wonder why it is oval. Because two celestial bodies can only be the orbit of a garden under ideal circumstances.

Any disturbance or mutual help will deviate this garden from the great ellipse. So the ellipse is the normal orbit of the celestial body.

It is true that the Moon is very far away from the Earth, gradually moving away at a rate of centimeters every year, a phenomenon mainly caused by the periodic tidal action between the Earth and the Moon. Tidal action refers to the phenomenon that the moon has a gravitational force on the earth, so the sea water on the earth is attracted by the moon, and the sea water fluctuates vertically. This phenomenon consumes the energy of the Earth's rotation, slowing down the speed of the Earth's rotation and moving the Moon away from the Earth.

Perhaps many people do not understand why the Earth's rotation speed decreases the Moon. Here we look at the Earth and the Moon as a whole. A decrease in the speed of the Earth's rotation is equivalent to a decrease in kinetic energy.

In a system, the energy is constant. Then it will inevitably increase the Moon relative to the Earth, so the Earth-Moon distance increases, and the farther the Moon is from the Earth.

This is because of gravity, which is related to the gravitational pull of the earth, the revolution of the moon, the mass of the moon, and the orbit of the moon.

It may be caused by gravity, or it may be due to the influence of the atmosphere, or it may be caused by some changes in the outside world, so it will cause the moon to leave us.

This can be the result of the slowing down of the Earth's rotation due to the interaction forces between the planets.

What is the reason behind the fact that the Moon is moving away from the Earth and the Sun is also moving away from the Earth? The Moon and the Sun are indeed moving away from the Earth. And this distancing happens every day.

What causes it? The main reason is the overexploitation of the earth by human beings, especially the various minerals under various strata, including the extraction of oil. "hollowed out" the earth.

The mass of the earth, every day the moon circles the earth, and the earth circles the sun in Taichang, depends on the gravitational force that exists between the two spheres. When the Earth's mass decreases, the gravitational attraction decreases, and the Moon will move away from the Earth.

If you want to know more, please refer to the physics textbook for senior one, the text about gravitation, there is a "law of gravitation.""and calculations, just look at it. Some of the analysis is rambling and rambling. It's very profound, but it's not necessary.

Originally, it belonged to popular science knowledge, but some people said that I was "talking nonsense.""。I can't finish what I mean, so I might as well say a few more words. It has been said that "tidal phenomena.""It is the "culprit" of the Moon's distance from the Earth"。

Others say that the Sun's attraction to the Earth and the Moon changes and causes the Moon to move closer to the Sun. I don't think either of the above statements is true.

The tidal phenomenon refers to the "ebb and flow" of the sea. This phenomenon is actually caused by periodic changes in the relative distance between the Moon and the Moon due to the rotation of the Moon around the Earth and the rotation of the Earth. The cyclical change of relative distance, in turn, causes the gravitational force that exists between the Earth and the Moon, which also changes periodically.

Eventually, there was a "ebb and flow". The Moon's distance from the Earth (not cyclical, as mentioned earlier) and tidal phenomena should not be confused.

The attraction of the sun causes the moon to move closer to the sun and away from the earth. This statement is scientifically false. Thermonuclear reactions are taking place in the sun all the time, and this thermonuclear reaction causes a loss of mass in the sun.

Theoretical calculations show that the solar lifetime is about 5.5 billion years. According to the law of gravitation, when the mass of the sun decreases, the corresponding gravitational force also decreases. There is gravitational force and"The product of the Earth's lunar mass is proportional".

The decrease in gravitational pull will only cause the Moon to move farther away from the Sun, not to get closer and closer.

The reason behind it is because of the bright force in the center of the earth and because there are certain changes in this substance in space, and these planets are all self-rotating, so it will become such a situation or situation.

The reason is that the more the mass of the earth is heavier, the worse the development of the earth's fierce ball, and the worse the earth's circumference, so the moon is moving away from the earth.

Because the mass of the earth is slowly becoming lighter, the gravitational force will become smaller and smaller, so this phenomenon occurs.

Summary. Hello! We're happy to answer for you!

Hello dear. The statement is incorrect, it should be that the Earth is far away from the sun, and you can refer to the situation of Saturn, which will become a gas planet.

If you are close to the sun, you can refer to the situation of the Martians, it is too hot and will be roasted.

What are the consequences of the sun and moon being farther or closer to the earth.

Hello! We're happy to answer for you! Hello dear.

It should be that the Earth is far away from the sun, but if you can refer to the situation of Saturn, the Earth will become a gas planet. If you are close to the sun, you can refer to the situation of the Martians, it is too hot, and it will be roasted by the first move.

The moon is far away from the earth, in fact, it is getting farther and farther away now, and the impact is negligible, and from 2.5 billion years ago to 100 million years ago, the average speed of the moon away from the earth was centimeters per year. In 1997, Williams re-analyzed the same set of data, and the results showed that the average velocity of the moon away from the Earth since 100 million years ago has been a false centimeter per year.

If you get too close, you may be attracted by the gravitational pull of the earth, and then embrace the earth, and the extinction of humans and other species.

This is due to tidal forces.

The earth rotates and revolves, and the direction of rotation and revolution is the same, then the speed of the part of the earth facing the sun around the sun is the speed of revolution minus the speed of rotation, the velocity becomes smaller, the centrifugal force becomes smaller, and the attraction of the sun to it is greater than the centrifugal force of its motion around the sun, so it will uplift.

The speed of the part of the earth that deviates from the sun around the sun is the speed of revolution plus the speed of rotation, the velocity increases, the centrifugal force becomes larger, and the centrifugal force of its movement around the sun is greater than the attraction of the sun to it, so it will also uplift, which forms the solar tide.

Due to the existence of the moon, the center of mass of the earth and the moon deviates from the center of the earth, and the center of mass of the earth and the moon is like a focus of the elliptical orbit for the matter on the earth, and the joint action of the earth and the moon forces the material on the earth to develop to the elliptical orbit when the earth rotates, so the part of the earth facing the moon and away from the moon will be uplifted, which forms the solar tide.

The tidal action of the Earth cancels out some of the force, and although this force is small, the Moon will be thrown out because of the angular velocity of rotation, a bit like the feeling of being thrown out of the car when we ride a bicycle and turn a corner. As the Moon farther and farther away, the Earth's rotation slows down, and when the Earth's self-transformation slows down, the Moon will be dragged back to the Earth. It is currently at the stage of the lunar principle Earth.

Speaking of the relationship between the sun and the earth, on the surface the two are getting closer and closer, because the sun is getting bigger, and on the other hand, the sun will emit a lot of energy because it burns itself, so the sun's influence on the earth is weakening. That is, the earth will be thrown out like the moon, so it may also get farther and farther away.

It's just a separate look at the relationship between the two, which is theoretically like this. In fact, there are many variables, such as a passing comet that can affect the balance of the entire interior of the solar system, similar to the butterfly effect, where a butterfly flapps its wings and forms a hurricane tens of thousands of miles away. The same is true for the trajectory of the stars in the universe, on the surface we can **, but in fact there are many variables.

For example, before the moon hits the earth, the sun may become a giant red star before the moon and engulf the earth, so there is no moon hitting the earth. Or the aforementioned external interference, such as the Milky Way being influenced by other galaxies outside to change its own rules, is possible.

<> when the Earth is between the Sun and the Moon, it is the image above when the Moon is on the far right. At this time, the Moon is seen from Earth, around the time of the Full Moon.