Hello Again, World

On December 24, 1968, Christmas Eve, astronaut William Anders took what would become one of the most consequential photographs in human history. He was aboard Apollo 8, orbiting the Moon for the fourth time, when the spacecraft rotated and the Earth appeared in his window. A small, luminous sphere, blue and white, suspended in the blackness above the barren lunar horizon. Anders grabbed his Hasselblad camera, loaded a roll of Kodak Ektach...