Live coverage: Station astronauts wire up new antennas

A Russian cosmonaut, a NASA flight engineer and a Japanese physician-astronaut strapped into their Soyuz ferry ship early Sunday, undocked from the International Space Station and plunged back to Earth, landing on the steppe of Kazakhstan to close out a 168-day mission.

NASA is working with the Russian space agency to potentially extend crew stays on the International Space Station, the agency’s acting administrator said last week, as a cushion against expected delays in the development of commercial crew capsules by Boeing and SpaceX.

Mitsubishi Heavy Industries, the prime contractor for Japan’s H-2B rocket, said Friday that engineers concluded a fire on the launch pad during a countdown earlier this month was most likely sparked by static electricity and stimulated by oxygen. The H-2B rocket launch has been rescheduled for Tuesday to start a resupply mission to the International Space Station.