on last week’s visit to nasa i discovered that, by the time it’s finished, the international space station will be the brightest object in the night sky. i’d never realised that you could see both the space station and the space shuttle from earth. the fact that man made objects on earth, such as the great wall of china, are visible from all the way up in space has always amazed me. now i can do the opposite and watch man made objects in space from way down here on earth. truly amazing.