The Great Wall of China cannot be seen from the Moon without a telescope.

Wacky WorldHistory

Despite a persistent myth dating back to William Stukeley in 1754, the Great Wall of China is completely invisible from the Moon with the naked human eye. Viewing an object only 5 to 9 meters wide from lunar orbit (384,400 kilometers away) is optically equivalent to spotting a single human hair from more than three kilometers away. NASA astronauts and Chinese taikonaut Yang Liwei have confirmed the wall cannot be distinguished without high-magnification satellite optics.

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