Live coverage: Dragon supply ship departs space station

During a fourth spacewalk Saturday to wrap up repairs of the coolant system in a $2 billion cosmic ray detector, Italian astronaut Luca Parmitano and Drew Morgan discovered a leak in one of eight coolant lines that were spliced into a new pump module during three earlier excursions. But Parmitano was able to tighten a fitting on the line and the astronauts were able to complete the repair work, setting the stage for the instrument to resume science operations.

Three space station residents crammed inside a capsule smaller than a compact car landed on the austere plans of Kazakhstan on Thursday, returning to Earth for their first taste of gravity and whiff of nature in nearly seven months.

Flying with an exceptionally lightweight payload, a Falcon 9 rocket delivered a multipurpose research satellite into a nearly 450-mile-high orbit Thursday for Taiwan following a smooth countdown and liftoff from California’s Central Coast.