1969 July 16, which is an immortal day for the world space industry. At Kennedy Space Center, under the command of Braun, Saturn V rocket sent three astronauts, Armstrong, Eidelin and Collins, into space. Four days later, on the afternoon of July 20th 1: 42, Armstrong and Eidelin bid farewell to Collins who stayed in the command module, climbed into the Eagle lunar module and flew to the moon. Seven hours later, Armstrong set foot on the first human footprint on the moon. In this regard, Armstrong later famously said: "This step is a small step for me personally; This is a huge leap for all mankind. "