Live coverage: Cygnus supply ship captured by space station’s robotic arm

The second satellite in Japan’s regional space-based navigation constellation is set for launch Thursday aboard an H-2A rocket, and these photos show the hydrogen-fueled launcher’s preparations for liftoff, from stacking inside an assembly hangar at the Tanegashima Space Center through rollout to the launch pad.

A United Launch Alliance Atlas 5 rocket blasted off from Vandenberg Air Force Base in California at 5:49 a.m. local time (8:49 a.m. EDT; 1249 GMT) Thursday on the classified National Reconnaissance Office NROL-55 mission.

A French-built communications satellite for Russia’s Gazprom Space Systems launched May 30 is maneuvering toward its final operating location in geostationary orbit using a set of backup thrusters after the spacecraft encountered a problem with its main engine.