One small step on the moon was easy compared to celebrity for Neil Armstrong.
The first man to walk on the moon is still puzzled by the fame that event brought him.
"Friends and colleagues, all of a sudden, looked at us, treated us slightly differently than they had months or years before when we were working together," the Apollo 11 astronaut told "60 Minutes" in an interview to be broadcast today. "I never quite understood that."
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Armstrong, 75, rarely grants interviews. He agreed to one last month just before his authorized biography, "First Man: The Life of Neil A. Armstrong," hit bookstores.