The first man to walk on the moon has died, according to reports.
The Herald Sun reported that Armstong was 82.
According to NBCnews.com, Armstrong had heart surgery several weeks ago and celebrated his 82nd birthday this past week.
Armstrong was famous for commanding the Apollo 11 spacecraft that landed on the moon on July 20, 1969, and for his statement that he and his team had made "one small step for man, bone small step for mankind."
Armstrong walked on the lunar surface for three hours with Edwin "Buzz" Aldrin, NBC News reported.
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According to Reuters, the Apollo 11 mission was Armstrong's last space flight, and he took desk job as NASA's deputy associate administrator for aeronautics in the office of advanced research and technology.
A year after that he left NASA to teach engineering at the University of Cincinatti.
Armstrong continued to live in the Cincinatti area, where he died, with his wife, Carol, Reuters reported.