Live coverage: Space station crew investigating slow pressure leak

SpaceX’s final Falcon 9 launch of the year carried a classified payload for the National Reconnaissance Office, the U.S. government’s spy satellite agency. SpaceX aborted a launch attempt Thursday morning to assess a second stage sensor reading, but the Falcon 9 successfully lifted off from the Kennedy Space Center at 9 a.m. EST (1400 GMT) Saturday. The rocket’s stage landed back at Cape Canaveral eight minutes later.

Two days after launching from the Baikonur Cosmodrome in Kazakhstan, three new crew members arrived Friday at the International Space Station to begin a six-month stay. Docking of the crew’s Soyuz MS-09 spacecraft to the station’s Rassvet module occurred at 9:01 a.m. EDT (1301 GMT).

Orbital ATK’s seventh Antares rocket stands ready for launch with a Cygnus supply ship Saturday on a two-day flight to the International Space Station.