General Knowledge · 2
What popular myth about the Great Wall of China has been debunked by astronauts, including those aboard the ISS?
Answer
That it is visible from space with the naked eye
Despite being one of the most widespread pieces of trivia, astronauts—including those on the International Space Station—have repeatedly confirmed the Great Wall cannot be distinguished from space with the naked eye due to its narrow width and color blending with surrounding terrain.
💡 Did you know?
The Great Wall of China is invisible from space with naked eye—a myth debunked by astronauts including those on the ISS.
Other options people guess
- That it was constructed entirely during the Ming Dynasty
- That it stretches unbroken across the entire Chinese border
- That it was built primarily by conscripted soldiers rather than laborers
Topics
- myths
- space
- china
- science
Know your general knowledge trivia?
Play a free General Knowledge quiz and see how many you get right — no signup needed to start.
More General Knowledge facts
General Knowledge
Which planet in our solar system has the most confirmed moons?
Saturn's moon Titan has lakes and rivers — but they're filled with liquid methane, not water, making it the only world besides Earth with stable surface liquids.
General Knowledge
What optical instrument did the inventor of Velcro use to closely study the burrs stuck to his dog's fur?
Velcro was invented by a Swiss engineer who noticed burrs stuck to his dog after a hunting trip and examined them under a microscope.
General Knowledge
What is the only planet in our solar system that rotates on its side, with an axial tilt of about 98 degrees?
Uranus rotates so far on its side that its poles experience 42 continuous years of sunlight followed by 42 years of darkness.
General Knowledge
What geometric shape, repeated twice, gives Nepal's national flag its distinctive non-rectangular silhouette?
Nepal's flag is the world's only non-rectangular national flag, deliberately designed as two stacked triangles to represent two mountain peaks.
General Knowledge
What existing communication system inspired Norman Woodland to design the barcode's pattern of bars?
The barcode was inspired by Morse code. Inventor Norman Woodland thought: dots and dashes could become wide and narrow bars.
General Knowledge
According to the famous accidental-invention story, where was the chocolate bar located when it melted near a radar machine in 1945?
The microwave oven was invented by accident when a researcher's chocolate bar melted in his pocket near a radar machine in 1945.