Can you see the Great Wall on the moon, and can you see the Great Wall on the moon? A daily lesson i

Relevant information shows that looking at the Great Wall from the moon is like looking at a strand of hair from two kilometers away. No matter how good your eyes are, you can't see them without tools.

Impossible, it is equivalent to seeing a hair 300 meters away, such a person can get the Guinness World Record Yang Liwei also said that he did not see it.

To be precise, if you are careful and careful, you can see it It's just very narrow, just like looking at the highway from space Do you know the astronaut magazine, which has a Chinese astronaut Jiao Lizhong's photograph

？？？I can't even see it at home! But I think you can still see it on the moon with the help of tools.

It's hard to see from an airplane, let alone space.

The Great Wall is the most magnificent building in China, a tall and sturdy wall, with a total length of more than 10,000 kilometers. In order to show the grandeur of the Great Wall, many people say, "The Great Wall is the only earth structure that can be seen on the moon."

So can we really see the magnificent Great Wall of our country on the moon?

In fact, you can't see the magnificent Great Wall on the moon. When you look at the Earth from the Moon, it's like a small blue planet, and you can't even tell where China is, let alone see the Great Wall. Because thousands of kilometers away from the Earth, it is impossible to see any buildings on the ground, and the distance from the Earth to the Moon is more than 400,000 kilometers.

It's as hard as looking at a strand of hair from 2 kilometers away. So it's almost impossible to see the Great Wall on the moon.

If you say, "You can see the Great Wall from space". This is indeed possible, but not the only one.

Space is 100 kilometers away from the ground. Here you can see many large buildings on the ground, such as cities, mountains, large farmlands, etc.

The claims about the Great Wall of China mentioned in the question are incorrect. This is perhaps one of the most popular urban lies, and another urban lie that is popular at the same time as it is the so-called "lemming mass suicide mystery".

The smallest angle of view that a person with normal vision can distinguish without a telescope is roughly 1 arc minute. The width of the Great Wall of China is, roughly speaking, 6 meters. It is not visible from an altitude of more than 20 kilometers – twice the height of Mount Everest.

If the shadow of the Great Wall is included, it may be possible to see it at such a height, but it is impossible to observe it at a height of more than 60 kilometers. However, the spacecraft could not fly at such a low altitude, because there was atmospheric resistance at this altitude, and the spacecraft's orbit could not be stabilized.

Still, there is a lot of work on the ground that can be seen from space, the biggest of which is the new lowlands that the Dutch have created in the sea. At night, the city can also be seen, as the street lights make the city appear brighter than the surroundings.

We know that the human eye is prone to seeing long objects and not easy to see short objects, so it stands to reason that it is possible to see the Great Wall of China when looking at the Earth from the Moon. However, many parts of the Great Wall are incomplete and intermittent, and it is sometimes difficult to find on the ground, let alone from space. Mr. Arnold, a very experienced photographer and astronomer, had studied the problem and concluded that it was impossible to see the Great Wall from the moon to the earth.

Armstrong, the commander of the Apollo 11 lunar spacecraft, once said that the Great Wall could not be seen from the moon. Astronaut Lovell, who flew Apollo 8 and Apollo 13, made serious observations and said it was completely impossible. Apollo 15 astronaut Owen also denied the claim that the Great Wall could be seen from space.

On the ** sent back by the unmanned space probe, you can sometimes see the winding route of the Great Wall, which is an image of the sand piled up on the windward side, not the Great Wall itself. At the end of the day, the Great Wall is still not visible.

No, except with a telescope.

Yang Liwei, the first person in China's space, accepted an interview after successfully returning to the ground, and a reporter asked curiously: "Have you seen the Great Wall in space?" Yang Liwei replied without thinking

No. The reporter's question is also what many people want to ask, and I don't know when the saying that "China's Great Wall is the only man-made structure on the earth that can be seen in space" has been widely circulated. It is said to have been verified by many astronauts and evidenced by **.

Major ** rushed to report, and some even said: "American astronauts said that the largest human building they can see with the naked eye from the moon is the Great Wall." The Great Wall seen above resembles a black earthworm.

As a result, this statement has become more deeply rooted in the hearts of the people. So can you really see the Great Wall in space? Theoretically, this is absolutely impossible.

Because the Great Wall is narrow and irregular, and it is difficult to observe irregularities in space; Not only that, but the average width of the Great Wall is less than 10 meters, and it is easy to be hidden by the surrounding terrain, so it is difficult to distinguish it at a height of 20 kilometers with the naked eye alone, and the height at which the Great Wall completely disappears from the human eye is only 60 kilometers. This is too much compared to the average orbital altitude of 400 kilometers for spacecraft. If you can see the Great Wall from the moon, it is like looking at a strand of hair from 2,688 meters away.

If astronauts can see the Great Wall, it is obviously not real.

You can't see the Great Wall from the top of the moon.

The Great Wall, also known as the "Great Wall", is a general name for the large-scale military projects built in ancient China at different times to resist the invasion of the alliance of nomadic tribes in northern China.

The Great Wall was built in the Spring and Autumn Period and the Warring States Period, and was built in King Yan, with a history of more than 2,000 years. The Great Wall referred to today refers to the Great Wall built in many generations, starting from the Yalu River in the east to Jiayuguan in the inland Gansu Province in the west.

In 2012, the State Administration of Cultural Heritage announced that the total length of the Great Wall of China was 1,000 kilometers, distributed in 15 provinces and autonomous regions, including Beijing, Tianjin, Hebei, Shanxi, Inner Mongolia, Liaoning, Jilin, Heilongjiang, Shandong, Henan, Shaanxi, Gansu and Qinghai, including 43,721 Great Wall heritage sites, including the Great Wall wall, moats, single buildings, Guanbao and related facilities.

During the Spring and Autumn Period and the Warring States Period, the princes of Yan and Zhao were in order to defend against the invasion of other countries. Beacon towers were built and connected with city walls to form the earliest Great Wall. Almost all subsequent kings strengthened and repaired the Great Wall. It is also called the "Great Wall" because it is tens of thousands of miles long.

Due to the age, most of the Great Wall of the early dynasties are incomplete, and the Great Wall built in the Ming Dynasty is relatively intact, so the Great Wall that people generally talk about refers to the Ming Great Wall, the length of the Great Wall is the length of the Ming Great Wall, the Ming Great Wall starts from Jiayuguan in the west, and reaches the Yalu River in the east.

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