Carl Sagan: Pale Blue Dot

On February 14, 1990, NASA commanded the Voyager 1 spacecraft, having completed its primary mission, to turn around to photograph the planets it had visited. One image Voyager returned was of Earth, 4 billion miles distant, showing up as a tiny dot. “The spacecraft was a long way from home. I thought it would be a good idea, just after Saturn, to have them take one last glance homeward. From Saturn, the Earth would appear too small for Voyager to make out any detail. Our planet would be just a poin