Live coverage: 400th Proton rocket takes off with Russian satellite

A Russian Soyuz rocket has reached its last stop before liftoff Friday with two Russian cosmonauts and veteran NASA flight engineer Jeff Williams, who is slated to break the record for the most cumulative time spent in space by a U.S. astronaut.

A previously-flown SpaceX Falcon 9 rocket booster conducted a test-firing Monday at NASA’s Kennedy Space Center in Florida, ahead of a planned launch Oct. 7 with an Airbus-built communications satellite made for SES and EchoStar.

An International Launch Services Proton rocket lifted off at 2137 GMT (4:37 p.m. EST) on Dec. 27 with the Astra 2G communications satellite, a new broadcasting platform owned by SES to beam television and broadband services to Europe, Africa and the Middle East.