What Man-made Artefacts Can Be Seen From The Moon ??

Deduct ten points if you said the Great Wall of China. No human artefacts at all can be seen from the moon with the naked eye. The idea that the Great Wall is the ‘only man-made object that can be seen from the moon’ is all- pervasive, but it confuses ‘the moon’ with space. ‘Space’ is quite close. 


 

It starts about 100 km (60 miles) from the Earth’s surface. From there, many artificial objects are visible: motorways, ships on the sea, railways, cities, fields of crops, and even some individual buildings. However, at an altitude of only a few thousand miles after leaving the Earth’s orbit, no man-made objects are visible at all. From the moon – over 400,000 km (some 250,000 miles) away – even the continents are barely visible. And, despite Trivial Pursuit telling you otherwise, there is no point in between the two where ‘only’ the Great Wall of China is visible.