Live coverage of the countdown and launch of a Soyuz rocket from French Guiana with Europe’s Sentinel 1B radar Earth observation satellite, France’s Microscope relativity probe and three CubeSats from Belgium, Italy and Denmark. Text updates will appear automatically below; there is no need to reload the page. Follow us on Twitter.
Live video coverage from Arianespace begins at 2045 GMT (4:45 p.m. EDT).
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Live coverage: Reused Falcon 9 rocket prepared for launch
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.