Contrary to popular belief, the Great Wall of China can NOT be seen by the naked eye from space, as recently confirmed by NASA. (The famous structure tends to blend into similarly-colored surroundings.) There are, however, many other landmarks around the world — both natural and human-made — that are visible from satellites and space stations orbiting our planet. Thanks to the NASA Earth Observatory, we can get an idea of how they look to astronauts, including those at the International Space Station…