If the weather is fine, can you see the Great Wall in space?

Some experts say that the narrow and irregular Great Wall with an average width of less than 10 meter is difficult to distinguish 20 kilometers away. If you can see the Great Wall from the moon, it is equivalent to seeing a hair from 2688 meters away. Ollind, one of the first two astronauts to land on the moon, stressed in an interview with the Hong Kong media that this was a misunderstanding and was "caused by people's ignorance of the facts". 10 June 16, when China's first astronaut Yang Liwei returned to Earth, a reporter asked, did you see the Great Wall of Wan Li in space? Yang Liwei replied: No.

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