Live coverage: Three Chinese astronauts return to Earth

NASA’s first space-worthy Orion capsule blasted off atop a Delta 4-Heavy booster rocket for a two-orbit, four-hour shakedown cruise in orbit. Liftoff occurred at 7:05 a.m. EST (1205 GMT), with splashdown in the Pacific Ocean at 11:29 a.m. EST (1629 GMT).

Bill Gerstenmaier, former director of spaceflight at NASA Headquarters and a widely respected aerospace engineer and manager, has taken a consulting position at SpaceX, the California rocket company NASA helped save in 2008 with the award of a $1.6 billion contract to build and launch space station cargo ships.

China’s Long March 6 rocket, fueled by a mixture of kerosene and liquid oxygen, successfully shot into orbit on its first mission Saturday with 20 small satellites, signaling a revolution in Chinese rocketry as the country prepares to test bigger boosters in the coming months.