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china wall from moon
it is said that astronauts can see the china wall from moon or space,
is it true or just a false rumor????????????
Last edited by kf10; 26 Feb 2014 at 00:11.
it is said that astronauts can see the china wall from moon or space,
is it true or just a false rumor????????????
Last edited by kf10; 26 Feb 2014 at 00:11.
The wall is not visible from moon. Maybe, from Earth's outer orbit.
From the Wiki link you posted.
The claim the Great Wall is visible has been debunked many times,[41] but is still ingrained in popular culture.[42] The wall is a maximum 9.1 m (30 ft) wide, and is about the same color as the soil surrounding it. Based on the optics of resolving power (distance versus the width of the iris: a few millimeters for the human eye, meters for large telescopes) only an object of reasonable contrast to its surroundings which is 70 mi (110 km) or more in diameter (1 arc-minute) would be visible to the unaided eye from the Moon, whose average distance from Earth is 384,393 km (238,851 mi). The apparent width of the Great Wall from the Moon is the same as that of a human hair viewed from 2 miles (3.2 km) away. To see the wall from the Moon would require spatial resolution 17,000 times better than normal (20/20) vision.[43] Unsurprisingly, no lunar astronaut has ever claimed to have seen the Great Wall from the Moon.
The OP and I cross posted (one posted while the other was still composing an answer) with essentially the same answer yet people keep jumping in afterward to pretty much say the same thing. Amazing!
Its a myth that the great wall can bee seen from the moon,
if i was Neil Nrmstrong all those years ago i would have said "Hey Buzz i can see your house from here"