NASA digs deep into the archives for a peaceful view of Earth from half a century ago

On Dec. 27, 1968, two days after Christmas in one of the USA's worst years on record, the astronauts aboard Apollo 8 returned home after almost a week in space.

The NASA mission crewed by astronauts Frank Borman, James Lovell, and William Anders logged a number of important firsts. It was the first human-crewed space mission...