For the first time in half a century, countdown clocks began ticking Monday toward launch of a three-man one-woman crew on a trip to the moon and back, a major step in NASA's accelerated drive to esta...

The countdown clock is officially rolling at Kennedy Space Center in Florida, where four astronauts are preparing to take off on the mission of a lifetime — circumnavigating the moon and returning hum...

The custom suits are equipped with survival gear in case the crew has to exit the spacecraft after splashdown — and are easily visible in the ocean.