'One small step for man': Moment of Neil Armstrong's famous line

What did Neil Armstrong really say when he took his first step on the moon? Millions on Earth who listened to him on TV or radio heard this : “That's one small step for man, one giant leap for mankind.“ But after returning from space, Armstrong said that wasn't what he had planned to say. He said there was a lost word in his famous one-liner from the moon: “That's one small step for 'a' man.“ It's just that people just didn't hear it.“