Apollo 8 enters lunar orbit; crew captures iconic 'Earthrise' photo and broadcasts Genesis reading

On the morning of Christmas Eve, December 24, 1968, Apollo 8 approached the Moon after a 66-hour transit across cislunar space. To enter lunar orbit, the spacecraft had to fly behind the Moon, losing all radio communication with Mission Control in Houston. At 68 hours, 58 minutes into the mission, the Service Propulsion System (SPS) engine ignited for a critical 4-minute and 7-second Lunar Orbit Insertion (LOI) burn. If the engine burned too long, the spacecraft would crash onto the surface; if it burned too short, Apollo 8 would swing past the Moon into solar orbit. At 69 hours and 8 minutes, the spacecraft re-emerged from behind the Moon, re-establishing radio contact, and Jim Lovell announced: "Apollo 8 is in orbit."

While completing 10 orbits around the Moon over 20 hours, the crew conducted lunar surface photography and evaluated potential landing sites for future missions. During the fourth orbit, as the spacecraft rotated its orientation, astronaut William Anders looked out his side window and saw a brilliant blue and white marble rising above the stark, cratered lunar horizon. Scrambling for film, Anders loaded color 70mm film into his Hasselblad camera and captured "Earthrise"—one of the most iconic photographs in human history, contrasting the fragile living Earth with the barren lunar landscape.

That evening, during their final scheduled live television broadcast from lunar orbit, an estimated one billion people—one-fourth of the world's population at the time—tuned in. Commander Frank Borman, Jim Lovell, and Bill Anders took turns reading the opening verses from the Book of Genesis, describing the creation of Earth. Borman concluded the historic transmission with: "Good night, good luck, a Merry Christmas, and God bless all of you—all of you on the good Earth."

A few hours later on Christmas morning, the SPS engine executed a flawless Trans-Earth Injection (TEI) burn behind the Moon. As they regained contact with Earth, Lovell famously announced, "Please be informed, there is a Santa Claus." Apollo 8 returned safely to Earth on December 27, capping a turbulent year in American history with a profound sense of global unity.