HomeAstronomyWhat human-made structures can be seen from space?

What human-made structures can be seen from space?

You’ve undoubtedly heard people say the Great Wall of China can be seen from space. But is that really true? In fact, is it possible to see any human-made structure from beyond Earth’s atmosphere?

To answer that question, first we need to define where Earth’s atmosphere ends and outer space begins. The Kármán line, named after physicist Theodore von Kármán, is widely considered the boundary between Earth and space. Typically, it’s defined as 100 kilometers (62 miles) above our planet’s surface. 

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