The astronauts of Nasronauts Suni Williams and Butch Wilmore changed near Tallahassee, Florida after nine months at the International Space Station.
They flowed into Astronaut Nick Hague and Russian Cosmonaua Alesandro Gorbunov.
Williams and Wilmore are in space in 286 days after the technical issues of Boeing Spacecraft intended to return it to the ground.
Their original mission was intended to last eight days.