Live coverage: Proton blasts off on return-to-flight mission

Four more satellites for SES Networks’ O3b broadband fleet launched Thursday aboard a Soyuz rocket. Liftoff of the Soyuz launcher from the Guiana Space Center in South America occurred at 1703 GMT (1:03 p.m. EDT).

A SpaceX Falcon 9 rocket lifted off with a pair of O3b internet satellites for SES Friday evening from Cape Canaveral Space Force Station, but a last-minute abort for a Falcon Heavy mission later in the night prevented the company from pulling off a launch doubleheader.

A Russian Proton rocket lifted off Thursday from the Baikonur Cosmodrome in Kazakhstan with the AsiaSat 9 satellite destined to provide television broadcast, video networking and data delivery services over the Asia-Pacific region. Launch occurred at 1852:16 GMT (2:52:16 p.m. EDT), beginning a series of maneuvers expected to last nine hours before AsiaSat 9 is deployed from the rocket.