Apollo astronauts, from left, Walt Cunningham, Apollo 7; James Lovell, Apollo 8 and 13; David Scott, Apollo 15; Buzz Aldrin, Apollo 11; Charles Duke, Apollo 16, Thomas Stafford, Apollo 10; and Eugene Cernan, Apollo 10 and 17; stand together at NASA headquarters in Washington.

First published in the July 20, 2009, 3:33 p.m. edition

Go to the DailySource front page