FILE - In this Dec. 21, 1968, file photo, the Apollo 8 crew lifts off from the Kennedy Space Center in Florida. Friday, Dec. 21, 2018 marks the 50th anniversary of the historic mission. (AP Photo/File)
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FILE - In this Dec. 21, 1968, file photo, the Apollo 8 crew lifts off from the Kennedy Space Center in Florida. Friday, Dec. 21, 2018 marks the 50th anniversary of the historic mission. (AP Photo/File)
