Four new astronauts arrive at International Space Station

Members of Nasa’s SpaceX mission from left to right, Roscosmos cosmonaut Andrei Fedyaev, Nasa astronauts Jack Hathaway and Jessica Meir, and European Space Agency French astronaut Sophie Adenot as they complete a full rehearsal of launch day activities at Cape Canaveral (SpaceX via AP)

The International Space Station returned to full strength with Saturday’s arrival of four new astronauts to replace colleagues who left early because of health concerns.

SpaceX delivered the US, French and Russian astronauts a day after launching them from Cape Canaveral.