Live coverage: China launches three-man crew to Tiangong space station

A Falcon 9 rocket and Dragon supply ship, primarily using previously-flown hardware, are scheduled for liftoff before dawn Friday at Cape Canaveral on SpaceX’s 15th cargo launch to the International Space Station under contract to NASA.

A Russian Soyuz booster arrived at its launch pad on the Kazakh steppe Sunday, the last stop before liftoff Wednesday with a three-person crew bound for the International Space Station.

Ground crews finished the initial build-up of the last “single stick” medium-lift variant of United Launch Alliance’s Delta 4 rocket on its launch pad at Cape Canaveral last week in preparation for liftoff with a GPS navigation satellite July 25.