In 1969, with the rapt attention of a mystified global audience, Neil Armstrong became the first man to walk on the moon—in fact, he became the first human being to set foot on any terrestrial object other than the earth. After years of training and buildup, Armstrong’s mission (which also included Buzz Aldrin and Michael Collins, who would stay in orbit during the moonwalk) represented a pinnacle of human exploration and achievement that has been unmatched in the ensuing decades. With his iconic declaration, “one small step for man, one giant leap for mankind,” Armstrong punctuated one of the most meaningful firsts in humanity’s history. Or so we thought until now…