Live coverage: Two Russians, one American arrive at space station

A Soyuz booster set for liftoff Wednesday with a Russian cosmonaut, a German flight engineer, and a former NASA flight surgeon heading for the International Space Station arrived at its launch pad in Kazakhstan Monday.

A SpaceX-owned Dragon cargo craft left the International Space Station on Friday and flew back to Earth for a parachute-assisted splashdown in the Pacific Ocean with a dozen mice and more than 3,000 pounds of experiment specimens and space hardware.

A Northrop Grumman Cygnus cargo freighter departed the International Space Station Wednesday after delivering more than 7,800 pounds of equipment and experiments, heading for an extended mission with payloads to study fire behavior in microgravity and test a next-generation radio system.