Live coverage of the countdown and launch of a Russian Soyuz rocket from French Guiana with four broadband communications satellites for O3b Networks. Text updates will appear automatically below; there is no need to reload the page. Follow us on Twitter.
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.