what landmark is visible from outerspace?

Answer 1

The great wall of China is often referred to as such although it generally isn't.

Source "It has become a space-based myth. The Great Wall of China, frequently billed as the only man-made object visible from space, generally isn't, at least to the unaided eye in low Earth orbit. It certainly isn't visible from the Moon." (NASA's website). It is vaguely visible from photographs taken from the moon.

The structures visible from space depend on how far out you are, although, as a general rule, no one structure can be seen by the unaided eye, from the moon. Many have, however, been photographed from space, including the Pyramids of Giza and many cities.

You can read a full report, although most of it is about the great wall of China, here:
http://www.nasa.gov/vision/space/workinginspace/great_wall.html

Answer 2

Funny how many people write Great Wall of China. One might think they would check out the first answer to see if it's right. (It is). The Great Wall of China is hard to see from ten miles up. The nearby airport at Beijing is easy to spot from 50 miles. Most major highways can be seen from ten times the altitude of the Great Wall.

A few months ago I asked this question and got many wrong answers. In fact, what I found by using Google Earth has not been beaten yet, except at night.

The lights from major metropolitan areas at night can be seen from thousands of miles away. But you are probably looking for structures or solid artifacts of some kind. What I found in my own research, using Google Earth, is the destruction of the rain forest in South America. Light and dark areas indicating cleared area contrasted to forest, can be seen from over 2000 miles up. But they look pretty amorphous and someone seeing them from that height would probably not recognize them as artificial.

But from an (apparent) altitude of 1400 miles, you can start making out the patterned cuts. This destruction is enormous. Some areas are completely cleared out and the size of New Jersey. Many have turned into sun-baked mud terrazzo desert without any life, as far as the eye can see. If you use Google Earth, explore western Brazil and see for yourself. It's kind of sickening. So, your term, "landmark," is appropriate. It's a mark, all right!

One contributor from Dubai, in the UAE, suggested the man-made islands being built along the coast there. You can resolve their obvious artificial shape from about 250 miles. These aren't nearly as big as the cleared areas in Brazil, but they are still pretty impressive, having been built from scratch out in the Persian Gulf.

Answer 3

The Great Wall of China

Answer 4

Your question leaves much to be desired. Where in Outer Space??? From low Earth Orbit many things can be seen.
As you move farther and farther away from the Earth, it is much more difficult to see specific landmarks and man made things.

Your question does not state "with the naked eye" or "using telescopes". As a result it is even harder to give you any specific response.

However, it is possible to see illuminated cities such as New York, or San Francisco late at night from some distance.

Answer 5

1

Answer 6

Depends on where from outter space. From the moon, the only one visible is the Great Wall of China.

Answer 7

There are NO man made objects that are visible from high orbits in outerspace (geosynchronous) or from the moon.

not a single one.

Unless you count seeing the lights of major cities at night. But the ability to see any single man made object without magnificaiton from orbit is impossible.

The great wall of china IS NOT visible from outerspace. how the hell would it be? It is 30 feet wide and hundreds of miles long. but the width of 30feet is impossible to see unaided from outerspace.

This would be like standing outside your house, looking at a hosue that is 1,000 feet away and seeing a crack in one brick on that house. It cannot be done without magnificaiton.

You would have a better chance of seeing the pyramids (they are wider at all 4 sides) and you can't see them.

Now if you are in low orbit where the shuttle is you can see lots of things.
this article is from space.com

What's Really Visible from Space
By Robert Roy Britt
Senior Science Writer
posted: 07:00 am ET
06 October 2003


There is a longstanding myth that the Great Wall of China is the only manmade object visible from space. It and several variations on the theme are great fodder for water cooler arguments. In reality, many human constructs can be seen from Earth orbit.

Shuttle astronauts can see highways, airports, dams and even large vehicles from an Earth orbit that is about 135 miles (217 kilometers) high. Cities are clearly distinct from surrounding countryside, and that's true even from the higher perch of the International Space Station, which circles the planet at about 250 miles (400 kilometers) up.

"You can see an awful lot from space," says astronaut Ed Lu, the science officer of Expedition Seven aboard the station. "You can see the pyramids from space, especially with a pair of binoculars. They are a little difficult to pick out with just your eyes."

Egyptian pyramids have been photographed from space several times with standard digital cameras and high-powered lenses. The largest pyramid at Giza, on the outskirts of Cairo, is 745 feet (227 meters) wide and 449 feet (137 meters) tall.

"With binoculars you can see an awful lot of things," Lu wrote via e-mail in fielding a question from an Earthbound space fan. "You can see roads. You can see harbors. You can even see ships; very large tankers on the ocean we can see using the binoculars."

There are some surprises, too.

"You can see airplane contrails, and occasionally at the end of an airplane contrail, you will see a glint of sunlight off the airplane," Lu says. "And very occasionally, you do see other satellites go by. It is kind of a neat thing to see."

There are of course places in space from which you can't notice how humans have sculpted the planet. Apollo astronauts could not make out manmade features from the Moon, for example. And from Mars, Earth would appear to the naked eye as nothing but a bright "star" in the night sky.

So what about the Great Wall of China?

"You can see the Great Wall," Lu says. But it's less visible than a lot of other objects. And you have to know where to look.

In fact stretches of the wall aren't even visible from China. They've been buried by sand for centuries. NASA has used space-based radar to map out hidden parts of the ancient structure. Lu is trying to get a picture of it, too, with a digital camera.

"The weather hasn't cooperated," he says. "There has been a lot of clouds and haze over that area since I've been trying. But I hope to be successful before I come back down."

This article is part of SPACE.com's weekly Mystery Monday series.

Answer 8

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Answer 9

Great Wall of China?

Answer 10

Only one...The Great Wall of China