Can the Great Wall of China be seen from outer space?
No, this is a fallacy which predates the space age. Even from
low-earth orbit, the shuttle astronauts cannot see it without
binoculars. The Wall is built of materials that blend in with the
surroundings from that height. (As opposed to cities and airport
runways, which are sometimes visible.) There is a mistaken belief
that it can be seen from the Moon, but obviously this is not
possible, and neither can any man -made object be seen from the