Live coverage: Proton rocket blasts off with Astra 2G

A Soyuz-2.1b booster loaded with 34 satellites for OneWeb’s global Internet network rolled out of its assembly building Monday at the Baikonur Cosmodrome in Kazakhstan and rode a rail car to its launch pad for final preflight checks before liftoff Thursday.

A Dragon supply ship owned and operated by SpaceX departed the International Space Station early Monday and returned to Earth for a predawn splashdown in the Pacific Ocean southwest of Los Angeles with scientific specimens and other equipment. Astronaut Jack Fischer released the Dragon cargo capsule from the station’s robotic arm at 2:41 a.m. EDT (0641 GMT), and splashdown occurred around 8:12 a.m. EDT (1212 GMT).

A United Launch Alliance Atlas 5 rocket blasted off from Cape Canaveral at 8:38 a.m. EST (1338 GMT) Friday to place the Global Positioning System 2F-12 navigation satellite into space. Follow the mission in our live journal.