Art Concepts - Apollo VIII

S68-51302 (December 1968) --- North American Rockwell artist's concept illustrating a phase of the Apollo 8 lunar orbit mission. Here, after 20 hours of lunar orbit, Apollo 8 astronauts start the 20,500-pound thrust engine and head for home. The service module engine will fire about three minutes, starting up while the spacecraft is at the darkened, backside of the moon and blocked from communication with Earth.