Neil Armstrong is a very famous astronaut, most famous for being the first person ever to step on the moon. He stepped foot on the moon on July 21, 1969. He then said the words, "That's one small step for man, one giant leap for mankind". He then taught at the University of Cincinnati. Today, many people have stepped on the moon, but none of those men were the first. Neil Armstrong will always be known as the first man to walk on the moon.