"On July 20, 1969, the world stood still to watch 38-year-old American astronaut Neil A. Armstrong become the first person ever to step on the surface of another heavenly body. Upon his return to Earth, Armstrong was celebrated for his monumental achievement. He was also--as NASA historian Hansen reveals in this authorized biography--misunderstood. Armstrong's accomplishments as an engineer, a test pilot, and an astronaut have long been a matter of...