Admittedly, at least for now, the idea of a beanstalk-like space elevator connecting Earth and space is a stretch. But next month’s X Prize Cup will host the Space Elevator Games, an unprecedented challenge for today’s engineers looking at ways to alter the future of access to space. Teams from around the country will gather October 20-21 in Las Cruces, New Mexico to compete for $400,000 in prize money as part of NASA’s Centennial Challenges—the space agency’s program of prize contests to stimulate innovation and competition in solar system exploration. No matter how you look at it—from the top down...