Live coverage: Proton launch runs into trouble

The Chinasat 9A communications satellite has arrived at its operational perch more than 22,000 miles over the equator after a Long March rocket deployed the craft in a lower-than-planned orbit last month due to a roll control error in the launcher’s third stage, according to China’s top state-owned aerospace contractor.

Launching into a sun-splashed summertime afternoon sky, a previously-flown SpaceX Falcon 9 rocket climbed into orbit from Florida’s east coast Friday with a U.S.-built, Bulgarian-owned television broadcasting satellite.

SpaceX aims to re-launch the Falcon 9 booster Monday that catapulted astronauts Doug Hurley and Bob Behnken toward the International Space Station in May, this time carrying a South Korean military communications satellite while pursuing a record for the quickest turnaround time between flights of an orbital-class rocket stage.