On July 31, 1971, U.S. Astronauts David Scott and James Irwin became the first humans to drive on the moon. Over a decade before the moon landing, scientists speculated about the possibility of traveling the lunar surface. As early as 1952, Wernher von Braun wrote published a series of articles titled “Man Will Conquer Space Soon!” which discussed the logistics of a six-week stay on the moon. By the mid 1960s, von Braun, then director of NASA’s Marshall Space Flight Center, revealed that research had already begun for lunar vehicles.