Watch Neil Armstrong's first step on the moon on July 20, 1969 and hear his now famous first words: "That's one small step for man, one giant leap for mankind."
Neil Armstrong, the first man to walk on the moon, died Saturday, weeks after heart surgery and days after his 82nd birthday. Shortly after his death was confirmed, tributes began pouring in online.
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- Video: NBC's Bruce Hall recaps Neil Armstrong's career