Live coverage: Atlas 5 countdown and launch journal

SpaceX rolled out the company’s first space-worthy Crew Dragon spacecraft and its Falcon 9 launcher to pad 39A at NASA’s Kennedy Space Center in Florida for the first time Thursday, beginning a series of fit checks before the commercial spaceship takes off on its first orbital test flight.

Operating with on-board autonomy more than 140 million miles from Earth, NASA’s OSIRIS-REx spacecraft succeeded Tuesday in a rehearsal for the sample return mission’s touch-and-go landing on an asteroid later this year.

Russian cosmonaut Fyodor Yurchikhin, on his fifth trip into space, and rookie NASA astronaut Jack Fischer, a Colorado native, blasted off aboard a Soyuz booster at 0713 GMT (3:13 a.m. EDT) Thursday from the Baikonur Cosmodrome in Kazakhstan, heading for the International Space Station for a four-and-a-half month expedition. The duo docked with the orbiting outpost at 1318 GMT (9:18 a.m. EDT).