Is the moon hollow? Does the moon refer to hollow?

This is a well-known rumor, and there is no substantial evidence that the Moon is hollow. I heard that this rumor first appeared mainly because the density calculated by the volume and total mass of the moon is smaller than the actual ore of some moons, so some people speculated that there was a hole in the middle. In fact, we all know according to common sense that if I find some ores from the earth that are denser than the average density of the earth, it is obviously not correct to say that the earth is hollow, not to mention that human beings have mined very little lunar ore, which does not explain anything at all.

If we really want to find out thoroughly, of course, we will go to the moon to investigate, but it will not be possible to achieve it yet, and we can only make a judgment based on the existing evidence.

Could the Moon be hollow?

How can it be hollow.

The moon refers to the hollow and has not been confirmed. The theory of lunar hollowness refers to the theory that the Moon is a hollow planet, because the rocks collected from the Moon indicate that the Moon is very dense, but it does not have the high quality to match the high density. Based on the results of the moonquake experiments, this doctrine was proposed.

Supporting Rationale. Lunar density: The density of lunar surface rocks brought back by the Apollo moon landing program is much greater than that of Earth's rocks.

The total mass of the Moon will be much larger than the current calculations, and accordingly, its gravitational force will be much greater, considering that the surface of the Moon is much closer to the center of the Moon than the surface of the Earth, and with its total mass, the gravitational force will be much greater than we think. However, I did not expect that the gravitational pull of the moon is only 1 6 of the gravitational force of the earth's surface, as if the gravitational pull of the moon has nothing to do with its density and mass.

Moonquake: In April 1970, the liquid oxygen tank in the service module of the "Apollo" 13 spacecraft suddenly overheated, and then a 15-ton rocket metal part fell to the surface of the moon, and the ** instrument set on the moon recorded the aftermath of the ** for up to 3 hours. If the moon is solid, this sound will only last for about a minute.

The moon is not hollow.

The moon is a spherical celestial body that revolves around the Earth and is also a natural satellite of the Earth. In Chinese, it is commonly known as the moon or moon, and in ancient times, it was also called referring to the world as Taiyin, Xuantu, Chanjuan, and Jade Pan.

The Moon is the fifth-largest moon in the solar system, with an average radius of about kilometers, which is equivalent to times the radius of the Earth; The mass is close to kilograms, which is a double of the ground return ball.

On May 16, 2019, the National Astronomical Observatories of the Chinese Academy of Sciences announced that a research team led by Li Chunlai, a researcher at the Chinese Academy of Sciences, used the Chang'e-4 probe data to prove the existence of deep materials dominated by olivine and low-calcium pyroxene in the South Pole-Aitken Basin on the far side of the Moon. The international academic journal Nature published this significant discovery. [2]

At noon on October 26, 2020 local time, NASA's Stratospheric Infrared Astronomical Observatory "Sophia" confirmed for the first time that there was water on the sunny surface of the Moon. [3]

At 23:11 on December 1, 2020, Beijing time, China's Chang'e-5 probe landed for the first time in the area north of the Lumke Mountains on the far side of the Moon [15] ; At 23:10 on December 3, the Chang'e-5 ascender took off from the lunar surface with about two kilograms of samples, and began to return to Earth after completing the docking and transfer work with the orbiter.

The moon is not hollow, and although the moon hollow theory has many fans among the public and has been supported by some scientists, the mainstream scientific community does not share this view.

Xu Meng, a postdoctoral researcher at Macau University of Science and Technology, said in an interview with a science and technology reporter that the so-called Apollo moonquake experiment does not show that the moon is hollow, or that it does not reflect any pre-disturbance sock structure of the moon, because this moonquake is only a signal transmitted back after passing through the superficial layer of the moon, and does not enter the inner depths of the moon at all.

Overview of the Moon:

The Moon's rotation is equal to the period of its revolution (known as tidal locking), so the Moon is always facing the Earth on the same side. The Earth's ocean tides arise mainly due to the gravitational pull of the Moon.

Because the tidal force of the earth's oceans is opposite to the direction of the earth's rotation, the earth's rotation is always subjected to an extremely weak force to "brake" the earth's rotation, which has accumulated over a long period of time, and there is ample evidence that the earth's rotation cycle is getting slower and slower, and the time of the day is increasing extremely slowly, about 1 second in a few years;

Due to the Earth's reaction force, the Moon slowly moves farther and farther away from the Earth, moving about a centimeter away from the Earth each year. The ratio of the size of the Moon to the Sun is similar to the ratio of distance, making it almost the same apparent size as the Sun, and during a solar eclipse, the Moon can completely obscure the Sun and form a total solar eclipse.

It is true that some people believe that the moon is hollow. The Moon is thought to have been born 4.5 billion years ago, the same age as Earth. The Moon has a diameter of 3475 kilometers, about 1 4 times the Earth, a mass of about 735 billion tons, an average density, and much smaller than the Earth.

The Moon is believed to be rocky, with layered structures such as crust, mantle, and nucleus.

There are two main reasons for thinking that the Moon may be hollow. One is quality and density. If the Moon is rocky, then the mass and density of the Moon should be higher than the measured values (the average density of the Earth is exceeded, Mars is, Mercury is, Venus is, and therefore it may be hollow.

The second is the duration of the moonquake wave. The United States once hit the lunar surface with the ascent stage of the lunar module left in lunar orbit during the moon landing, and artificially created a moonquake, but the results were surprising. The waves went back and forth inside the moon for hours.

If the Moon is a solid sphere, the shock waves will only last for a few minutes at most, which is the case on Earth. Only in the case of a hollow sphere will the shock wave go back and forth like this.

For this reason, there is speculation that the Moon may be hollow, at least not completely solid, and there may be cavities of larger volumes in it. But this is difficult to prove.

This also gives science fiction writers plenty of room for imagination.

No, it's the same as Earth.