During his administration at NASA , the first seven Apollo manned missions were flown , in which 20 astronauts orbited Earth , 14 traveled to the Moon , and twelve walked upon its surface .
During his administration at NASA , the first seven Apollo manned missions were flown , highlighted by the first ever manned lunar landing by Apollo 11 . 
 In all , 20 astronauts orbited Earth , 14 traveled to the Moon , and twelve walked upon its surface .