Did you know the Great Wall of China can be seen from outer space?
No, can it? And how far away would be 'outer space'? Pretty close up, I suppose
Yes, I know that but only when the weather is clear and the astronaut really pays attention to it.
Actually the wall itself cannot be seen with the unaided eye from space. What is visible, though, is the wind blown sand that has accumulated against the base of the wall along a good portion of it's length.
This is very interesting fact. i am curious to know where the source came from though. i don't think it is far fetched becuase that thing is very prominent.
According to the NASA site, it's a myth. It can be picked out from photographs however actually seeing it depends on conditions. The wall is similar in color to the surrounding area so it blends in, not visible by the unaided eye at low-earth orbit. Any higher and nothing discernable can be observed except natural features.
There is an rather cool photo of the pyramids.
http://www.nasa.gov/vision/space/workin … _wall.html
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