Watch Ariane 5 launch with Star One D1 and JCSAT 15

A Falcon 9 rocket lifted off from Vandenberg Air Force Base on the Pacific coastline northwest of Los Angeles on Friday night, sending 10 Iridium communications satellites toward orbit on a previously-flown first stage booster.

Liftoff of a previously-flown Falcon 9 rocket is set for 6:27 p.m. EDT (2227 GMT) Thursday from NASA’s Kennedy Space Center in Florida, the first time SpaceX has reused one of its first stage boosters on a second mission. Ground crews face a tight timeline to ready the rocket and the SES 10 communications satellite in time for a Thursday launch attempt.

Four astronauts strapped into their SpaceX Crew Dragon spacecraft Monday and rode along for an automated maneuver to relocate the capsule to a different docking port outside the International Space Station. The relocation maneuver, which concluded with a link-up with the new docking port 7:08 a.m. EDT (1108 GMT), was the first of its kind for a Crew Dragon spacecraft.