Nilesh.org Notes on technology and everything else

It is said that the Chinese astronaut Yang Liwei, on his recent space sojourn did not see the great wall of China from up. Many of us were made to believe that the only man-made structure visible to the naked eye from Moon was the Great Wall of China. And how gullible we were! The fact is, no man-made structure is visible to the naked eye from Moon. However many man-made things are visible from Earth’s orbit. If you have a pair of binoculars, you can even see an aeroplane reflecting sunlight off its back or an artificial satellite floating below you! The adjoining is a photo of the pyramids taken with a digital camera and an 800mm camera lens. You can even see the Great Wall. But now many parts of the wall have been covered by sand and it has become difficult to spot it.