Live coverage: Falcon 9 disintegrates after launch

The first operational flight of SpaceX’s Crew Dragon spacecraft with four astronauts aboard is set to launch from the Kennedy Space Center in Florida no earlier than Oct. 23, following a formal certification review to assess data from the Crew Dragon’s two-man test flight that concluded earlier this month, NASA said Friday.

Touching down after 340 days in orbit, astronaut Scott Kelly and cosmonaut Mikhail Kornienko have returned to Earth from the International Space Station aboard a Soyuz crew capsule commanded by Sergey Volkov. Landing in Kazakhstan occurred at 0426 GMT Wednesday (11:26 p.m. EST Tuesday).

An ambitious mission of exploration launched from Japan at 0422 GMT Wednesday (11:22 p.m. EST Tuesday). An H-2A rocket lifted off from the Tanegashima Space Center with Hayabusa 2, starting a six-year journey to collect rocks from an asteroid and return them to Earth.