On board is the new crew of four astronauts, which must come on the ISS before the two Americans, Butch Wilmore and Suni Williams, can finally be allowed to return home after more than nine months in orbit.
Wilmore and Williams went up to ISS in June, and would have only spent about a week there from the beginning. But Boeing’s rocket system, which they went with, had such serious security problems that it now has an indefinite flight ban.
Space X Spackerarost, which is now on the way, is expected to arrive at ISS night to Sunday Swedish time. If everything goes as it should, Wilmore and Williams will return home next week.