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Wednesday, May 12, 2004

Proba Sees the Great Wall of China from Space
When Yang Liwei, the first taikonaut, orbited 14 times around Earth in October 2003, he didn't see the Great Wall of China from his Shenzhou V capsule. He was disappointed, and so were his countrymen. China said for decades that the Great Wall was the only manmade object visible from space. So, the Chinese government was tempted to modify the schoolbooks to remove this reference.

But now, Proba, the polyvalent satellite launched in 2001 by the European Space Agency (ESA), was able to capture images of the Great Wall from space taken at an altitude of 600 km.

As a practical consequence, millions of books will not have to be printed again, saving probably a large forest. You'll find more details and references in this overview.
:: posted by Roland Piquepaille, 12:24 PM Comments (0)
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