(WGN-AM)- It was 40 years ago Monday, Apollo 11 touched down on the moon, and American astronauts Neil Armstrong and Buzz Aldrin became the first people ever to walk on its surface. Millions of people from across the world watched the amazing feat unfold on live television. Upon setting foot on the moon, Armstrong said something that will forever be etched in people's minds and in history books: "That's one small step for man. One giant leap for mankind."
The Adler Planetarium in Chicago is marking the amazing accomplishment.
(WGN-TV contributed to this story)
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Adler Planetarium Celebrates Apollo 11 Anniversary
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