Space was at the center of America's imagination in the 1960s. President John F. Kennedy's visionary statement captured the mood of the day: "We choose to go to the moon in this decade and do the other things, not because they are easy, but because they are hard." The Apollo mission's success in July 1969 made almost anything seem possible, but the Cold War made space flight the province of governmental agencies in the United States. When the Apollo...