Watch the Falcon 9 launch from pad 39A

The rescheduled test came a day after a launch day rehearsal with the Crew-11 astronauts and cosmonaut in the loop, referred to as a dry dress rehearsal. The Crew-11 launch is currently scheduled for Thursday, July 31 at 12:09 p.m. EDT (1609 UTC).

Russian investigators have traced the cause of a dramatic Oct. 11 Soyuz launch abort to a “deformed” sensor in a system that controlled the separation of a strap-on first-stage booster from the rocket’s central core stage, triggering a dramatic emergency escape for the Russian mission commander and his NASA co-pilot, senior managers said Thursday.

A hefty communications satellite built by Boeing and launched by SpaceX Monday night from Cape Canaveral is on the way to a lofty perch more than 22,000 miles over the Pacific Ocean, where a startup named Kacific will use it to link remote populations seeking connectivity for health clinics, schools and other basic services.