Is Great Wall of China Visible From Space? Debunking Space-based Myth

The Great Wall of China is an iconic landmark and an impressive engineering feat, but is it visible from space? This is a question that has been debated for decades. Some people believe that the Great Wall is visible from space, while others argue that it is not.
What's the right answer?
The short answer is that the Great Wall of China is not visible from space with the naked eye.The Great Wall is not visible from low Earth orbit, which is where most manned space missions take place. According to NASA, the lowest altitude for a human-made object to be visible from space is about 160 kilometers (100 miles) above the Earth's surface. However, the Great Wall is only about 8 meters (26 feet) wide, which is too narrow to be seen from that altitude.
Even from higher orbits, such as those of the International Space Station (ISS), the Great Wall is not visible to the naked eye. Astronauts on the ISS can see many landmarks on Earth, but the Great Wall is not one of them.
What astronaut have to say
Neil Armstrong, the first person to step on the moon, revealed in many interviews that he did not see any man-made structures from the lunar surface. Armstrong reported that he only saw natural features such as continents, lakes, and scattered white spots on a blue background.
"The Great Wall of China, frequently billed as the only man-made object visible from space, generally isn't, at least to the unaided eye in low Earth orbit. It's hard to see even from the International Space Station," reported NASA, Earth Observatory.
In 2004, NASA astronaut Leroy Chiao managed to capture a photo of the Great Wall of China from the International Space Station, which orbits 408 kilometers above the Earth. However, Chiao himself said, "I've been asked many times if the Great Wall of China is visible from the Moon. It's not."

This photo of central Inner Mongolia, about 200 miles north of Beijing, was taken on November 24, 2004, from the International Space Station. The yellow arrow points to an estimated location of 42.5N 117.4E where the wall is visible. The red arrows point to other visible sections of the wall. (Photo and Caption Credit: NASA)
Chris Hadfield, former commander of the International Space Station, also confirmed the same, stating, "The Great Wall is a wonderful structure, but it's not visible from space."
So why do some people claim the Great Wall is visible from space?
One reason is that some early astronauts reported seeing the Great Wall from space. However, their sightings have been debunked. The Great Wall is only about 30 feet wide and made of materials that blend into the surrounding terrain, making it very difficult to see from orbit.
While the Great Wall of China is an impressive landmark, it is not visible from space with the naked eye. Despite some early astronauts claiming the sightings, modern astronauts and space agencies confirm that the Great Wall is not visible from low Earth orbit or even higher orbits such as those of the ISS.