Engineers working on problems preventing return of Sunita Williams and Butch Wilmore, who are on the ISS
Two Nasa astronauts from Boeing’s troubled Starliner capsule might have to remain in space until the middle of August as engineers continue to work through technical problems that prevented their return in June.
Sunita Williams and Butch Wilmore have been aboard the international space station (ISS) since 6 June after the first crewed docking of the next-generation spacecraft. The test mission was scheduled to last about a week, but Starliner’s undocking was delayed several times as faulty thrusters and then a series of small helium leaks raised safety concerns.
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