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Apollo 8 was launched on December 21, 1968 aboard a three-stage Saturn V. The craft first entered LEO and then made the trek to the Moon. It took three days to make the voyage to lunar orbit. Once there, the crew circled the satellite for 20 hours, making three cycles around the Moon. During this time, the crew observed Christmas Eve from space, even reading verses from the Book of Genesis on a live television broadcast. Once the vehicle returned to Earth, the crew spent two and a half days in orbit before finally making reentry. They splashed down in the Pacific on December 27, ending the first manned orbit of moon missions and beginning the long run of Apollo successes.
Above right: Earthrise. (Supplied by NASA; Public Domain; http://upload.wikimedia.org/wikipedia/commons/d/dc/AS8-13-2329.jpg)