Even though we've all seen the pictures, only 556...  ...ck to tell us about it. Only 24 have seen it as a pale blue dot from lunar orbit. National Geographic talked with...

Discovery News has a gallery of photographs of the Earth, taken from various distances, from the 1946 film shot at 65 miles up to Voyager's 1990 image from 4 billion miles away. The image here of the Earth rising over th...