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2007-12-02 08:27:07 · 12 answers · asked by Anonymous in Science & Mathematics ➔ Astronomy & Space
The Great Wall of China can be seen as a thin line if one knows where to look.
The Great Wall can be seen with radar imaging:
http://www.nasa.gov/vision/space/workinginspace/great_wall.html
http://www.jpl.nasa.gov/radar/sircxsar/gwall.html
According to astronaut Eugene Cernan, the Great Wall is visible to the naked eye between 100 - 200 miles above Earth:
http://www.chinadaily.com.cn/english/doc/2004-05/14/content_330829.htm
In order to avoid conflicting answers, perhaps we need to resolve what is meant by 'space' and if we are asking whether the Great Wall can be seen with the aided or unaided eye.
The space shuttle captured a clear image of the Great Wall in 1994 - again with radar imaging:
http://en.wikipedia.org/wiki/Great_Wall
2007-12-02 08:31:07 · answer #1 · answered by Troasa 7 · 3⤊ 3⤋
This Site Might Help You.
RE:
what man-made structures can be seen from space?
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2015-08-10 13:11:43 · answer #2 · answered by Starr 1 · 0⤊ 0⤋
the wall of china is the only man-made structure seen from space.
2007-12-02 08:35:43 · answer #3 · answered by c_may123 2 · 4⤊ 2⤋
Some say the Great Wall Of China can be seen "from space", but that's a myth. Even from low orbit.
Many man-made artifacts can be seen from low orbit (or at least their location can be seen because the patterns they create are regular, unlike natural features). Go to Google Earth, look at some cities or major highways, then pan outward and see what the eye elevation is when you lose sight of the object, or lose sight of any sign that it's there.
2007-12-02 08:46:29 · answer #4 · answered by Anonymous · 2⤊ 3⤋
The Birmingham Open-Pit Copper Mine in Utah. It's the largest in the world and it is so deep you could put the Empire State building standing up in it.
2007-12-02 11:37:40 · answer #5 · answered by Alaryn 2 · 0⤊ 1⤋
None. Of course "space" is not a set height above earth.
2007-12-02 08:33:52 · answer #6 · answered by Howard H 7 · 0⤊ 1⤋
That depends on how you define 'space'. From low-Earth orbit, you can see several things, including the pyramids. From higher orbit, the shuttle, or the Moon, you can't see any. Not even the Great Wall of China.
2007-12-02 08:33:20 · answer #7 · answered by eri 7 · 2⤊ 3⤋
I agree with Bullet. The only way man made objects can be seen from space is with enhancement devices - not with the naked eye.
2007-12-02 08:32:23 · answer #8 · answered by Anonymous · 1⤊ 3⤋
The great wall of china and no its not a myth as long as it can be magnified from the source taking the photos,, I have seen pics of from space,,
2007-12-02 08:32:31 · answer #9 · answered by SPACEGUY 7 · 3⤊ 5⤋
None. None at all.
"The Great Wall of China" is a common answer, but is a myth. It may be long, but it is far to thin to be resolved at such high altitudes.
2007-12-02 08:30:53 · answer #10 · answered by Bullet Magnet 4 · 5⤊ 3⤋