Tomorrow is the 45th anniversary of the photo of the Earth rising over the Moon taken by the Apollo 8 astronauts. It's become known as "Earthrise" and is surely one of the most iconic photos of the space race era. This video goes over exactly how earthrise was seen and the unplanned photo op transpired inside the Apollo 8 capsule.
"And from the crew of Apollo 8, we close with good night, good luck, a Merry Christmas – and God bless all of you, all of you on the good Earth." - Frank Borman, 24 Dec 1968