SpaceX will launch a crewed NASA mission on Friday to return two astronauts from the International Space Station, after technical issues with Boeing’s spacecraft extended their stay for nine months, leading SpaceX CEO Elon Musk and President Donald Trump to suggest they were stranded for “political reasons.

A SpaceX Crew Dragon capsule is carrying a fresh crew to the space station, setting the stage for the Starliner astronauts to finally come home after nearly 300 days in space.

Cosmonauts Suni Williams and Butch Wilmore went to the space laboratory for a week and have been there for nine months due to defects in the Boeing spacecraft they arrived in. It won't happen yet. The two astronauts who were supposed to be at the International Space Station for only a week when they took off last June and are still there,