NASA will land daring spacecraft on a world 800 million miles away

NASA's Dragonfly mission sounds like science fiction. But it's real.The space agency will launch the car-sized craft, fitted with eight spinning rotors, to one of the most intriguing worlds in our solar system, Saturn's ocean- and dune-covered moon, Titan. It's a frigid realm where methane, not water, fills lakes and seas, and where the dunes are teeming with the organic ingredients needed for life (as we know it) to develop.NASA determined that Dragonfly aced its preliminary design stages, and