Three NASA astronauts and a Russian cosmonaut are due to return home on a Crew Dragon spacecraft in a couple of weeks.
Butch Wilmore and Suni Williams joined the Crew 9 mission after their first crewed flight on Boeing's Starliner spacecraft faced technical issues and had to return uncrewed.
The return of Crew 9 is further delayed due to development issues with a Crew Dragon, extending their flight from eight months to more than nine months.
During a recent news conference, NASA officials discussed the politicization of Crew 9's return and Elon Musk's recommendation to deorbit the space station early.