Live coverage: Falcon 9 disintegrates after launch

With Hurricane Isaias threatening Florida’s East Coast, astronauts Doug Hurley and Bob Behnken are awaiting a go-ahead on plans to undock from the International Space Station Saturday, setting up a fiery plunge to splashdown Sunday, presumably in the Gulf of Mexico, to close out a 64-day flight.

The mission will focus on proving the reusability of the rocket and not on additional flight objectives, like operating the payload bay door or reigniting the vacuum engines on the Ship upper stage. The June 5 launch window opens at 7 a.m. CDT (8 a.m. EDT (1200 UTC).

SpaceX’s next two missions will revert to launching older versions of the company’s Starlink internet satellites, instead of new second-generation Starlink platforms as originally planned, while ground teams work out unspecified problems with the first batch of upgraded Starlinks launched in February.