Boeing Starliner not ready to come back to Earth – leaving astronauts on International Space Station
Extra time will allow Nasa and Boeing to plan for return – after delayed departure and a series of leaks
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Your support makes all the difference.Boeing’s troubled Starliner spacecraft will stay at the International Space Station for longer than expected, just the latest in a series of problems for the capsule.
It means that the astronauts who were carried to the space station in a mission earlier this month will have to stay for longer than expected, coming back on 22 June. They may end up staying for longer.
Nasa said that the delayed return will allow Nasa and Boeing to spend more time planning for the astronauts’ return and their journey back down to Earth.
Nasa astronauts Butch Wilmore and Suni Williams were launched aboard Starliner June 5 and arrived at the ISS the next day, following a 24-hour flight in which the spacecraft encountered four helium leaks and five failures of its 28 manoeuvring thrusters.
“The extra time allows the team to finalise departure planning and operations while the spacecraft remains cleared for crew emergency return scenarios within the flight rules,” Nasa and Boeing said in a statement.
They are targeting a departure no earlier than June 22, leaving open an opportunity for further extensions of time at the ISS. Starliner, while designed for future six-month missions, can stay docked to the ISS for a maximum of 45 days during its current mission.
The return to Earth is expected to last about six hours and target a location in the desert of Utah, New Mexico or other backup locations, depending on local weather conditions.
Starliner‘s first flight with astronauts is a crucial last test in a much-delayed and over-budget program before Nasa can certify the spacecraft for routine astronaut missions and add a second US crew vehicle to its fleet, alongside SpaceX’s Crew Dragon.
The spacecraft during its time docked to the ISS has encountered more problems. A fifth leak of helium - used to pressurize Starliner‘s propulsion system thrusters - popped up, and separately an oxidizer valve has been stuck, Nasa has said.
Those in-flight problems follow years of other challenges Boeing has faced with Starliner, including a 2019 uncrewed test failure where dozens of software glitches, design problems and management issues nixed its ability to dock to the ISS. A 2022 repeat uncrewed test succeeded to dock.
If all goes as planned with Starliner‘s return of two astronauts back to Earth, Boeing still faces other challenges before making the spacecraft operational and bringing it to market for other non-Nasa customers.
Additional reporting by agencies
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