On July 20, 1969, American astronauts Neil Armstrong (1930-2012) and Edwin "Buzz" Aldrin (1930-) became the first humans ever to land on the moon. About six-and-a-half hours later, Armstrong became the first person to walk on the moon. As he took his first step, Armstrong famously said, "That's one small step for man, one giant leap for mankind."

Source: History