section_path: Visibility from space/From the Moon
section_name: From the Moon
paragraph_text: From the Moon
  
  The Great Wall of China cannot be seen by the naked human eye from the Moon. Even though the myth is thoroughly debunked, it is still ingrained in popular culture. The apparent width of the Great Wall from the Moon would be the same as that of a human hair viewed from 3 km (2 mi) away.
  
  One of the earliest known references to the myth that the Great Wall can be seen from the moon appears in a letter written in 1754 by the English antiquary William Stukeley. Stukeley wrote that, "This mighty wall of four score miles in length is only exceeded by the Chinese Wall, which makes a considerable figure upon the terrestrial globe, and may be discerned at the Moon." The claim was also mentioned by Henry Norman in 1895 where he states "besides its age it enjoys the reputation of being the only work of human hands on the globe visible from the Moon." The issue of "canals" on Mars was prominent in the late 19th century and may have led to the belief that long, thin objects were visible from space. The claim that the Great Wall is visible from the moon also appears in 1932's Ripley's Believe It or Not! strip.