Video: Soyuz MS-01 leaves the space station for landing

Astronaut Scott Kelly and cosmonaut Mikhail Kornienko ended a record-setting 340-day stay in orbit with a fiery plunge to Earth Tuesday, settling to a jarring rocket-assisted touchdown in Kazakhstan to close out a medical research voyage that may help pave the way for flights to Mars.

A U.S.-Russian-Italian space crew closed out a 199-day expedition on the International Space Station with a parachute-assisted landing Thursday on the steppe of Kazakhstan. Touchdown of the Soyuz TMA-15M spacecraft occurred at 1343 GMT (9:43 a.m. EDT).

A United Launch Alliance Atlas 5 rocket, flying in its basic two-stage configuration with no strap-on solids, was stacked aboard a mobile launch platform at Cape Canaveral’s Vertical Integration Facility on Feb. 22 and 23 in preparation to send Orbital ATK’s S.S. John Glenn cargo ship into orbit for the International Space Station.