The task of returning the astronauts related to 10 months ago .. What is the story?

The NASA announced on Friday that the task of returning astronauts in space was successfully launched.
American astronaut Barry Wilmur and Sonita Williams has been on the International Space Station since June, although he was supposed to be on the station for only one week.

Restore space pioneers

NASA said that the Spess X company “SpaceX” pushed the “Dragon” spacecraft to the orbit, carrying NASA’s astronauts from Nichelin and Nicole Aires, head of the Japanese space exploration agency Takoya Unishi, and Russian astronaut Kerle Peskov.

It is expected that the spacecraft at the International Space Station will be at late in Saturday.
NASA said the astronauts of NAK Nick Hig, Williams and Wilmmore, along with Russian astronaut Alexander Gorbonov, would leave the International Space Station March 19.