Live coverage: Soyuz crew capsule departs station, lands in Kazakhstan

An eight-ton cargo ship destined for the International Space Station was hoisted aboard its United Launch Alliance Atlas-Centaur booster rocket today in preparation for liftoff to the orbiting laboratory next week.

An apparent exterior coolant leak from a Russian laboratory module at the International Space Station has been reported by the crew. It follows similar leaks that struck a Russian Soyuz crew ferry craft and a Progress cargo ship within the past year.

SpaceX test-fired the Crew Dragon spacecraft’s eight SuperDraco abort engines Wednesday at Cape Canaveral, paving the way for a high-altitude rocket escape test and demonstrating engineers have apparently fixed the problem that triggered an explosion during a similar ground firing in April.