NASA Is Betting on These Five Extraordinary Ideas

Beyond developing current missions, NASA's job is to invest in technologies that might seem like sci-fi—but could hold the keys to the next generation of space missions. After all, a century ago, the idea of a lunar landing probably seemed almost like pure sensational fiction. And this week, NASA picked the five… » 8/08/14 11:21am 8/08/14 11:21am