Q&A with Keith Gendreau, principal investigator of the first X-ray space communications experiment (members only)

Wrapping up SpaceX’s fourth operational resupply flight to the International Space Station, a Dragon cargo capsule departed the high-flying research complex, dropped out of orbit and descended to a parachute-assisted splashdown in the Pacific Ocean with nearly 3,300 pounds of biological specimens and hardware.

A veteran Russian cosmonaut, a rookie French flight engineer and a record-setting NASA astronaut making her third trip to the International Space Station are gearing up for launch Thursday aboard an upgraded Soyuz ferry craft, kicking off a two-day flight to the orbital laboratory.

A Russian Soyuz rocket and Progress resupply freighter are set for liftoff Monday on an accelerated, less-than-four-hour rendezvous with the International Space Station after last-minute launch scrubs prevented two similar fast-track approach attempts in recent months.