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

Astronauts Drew Morgan and Christina Koch floated back outside the International Space Station Friday and completed work to replace six aging batteries with three more powerful units in one of the lab’s eight solar power circuits. Three more spacewalks are planned over the next two weeks to replace another six batteries in an adjacent circuit.

A Russian cosmonaut, his Canadian co-pilot and a NASA flight engineer boarded their Soyuz spacecraft, undocked from the International Space Station and plunged back to Earth Monday evening, landing on the balmy steppe of Kazakhstan to close out an action-packed 204-day mission.

A senior Russian politician whose portfolio includes the country’s space program has blamed human error for a Nov. 28 launch failure that led to the destruction of a $45 million weather satellite and 18 secondary payloads, according to multiple news reports.