Astronauts Stranded on ISS Due to Boeing Starliner Technical Issues

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 Boeing's Starliner capsule, currently docked at the International Space Station (ISS), has encountered several technical issues that have delayed the return of astronauts Sunita Williams and Barry Wilmore to Earth. Originally planned for a prompt return, their mission has been extended indefinitely as NASA and Boeing work to resolve the problems. The return date has been postponed three times, with no new date set.

Technical Difficulties Since Launch

Since its launch on June 5, the Starliner has faced multiple challenges, including five helium leaks, the failure of five maneuvering thrusters, and a malfunctioning propellant valve. These issues have required extensive troubleshooting efforts from both the crew in space and mission control in Houston.

Current Status

According to NASA's commercial crew manager, Steve Stich, the Starliner can remain docked at the ISS for up to 45 days, with a potential extension to 72 days if necessary. Internal sources suggest that the latest target for return is July 6, significantly extending the mission beyond its original eight-day plan. The primary concern lies with Starliner's expendable propulsion system, which is crucial for detaching from the ISS and re-entering Earth's atmosphere. Recent test firings of the thrusters have provided some confidence, but the mission team continues to analyze data and explore solutions, including software updates and adjustments in hardware usage.

Emergency Contingency Plans

Despite the propulsion issues, NASA assures that Starliner can still return the astronauts to Earth in an emergency. The capsule could serve as an escape pod or be used if any critical components, such as solar panels, show signs of imminent failure.

Alternative Return Options

If Starliner is deemed unsafe for the return journey, Williams and Wilmore may be transported back on SpaceX's Crew Dragon, which arrived at the ISS in March with four astronauts. This option, although unlikely, would be a setback for Boeing. The last time an alternative return was necessary was in 2022 when a Russian Soyuz capsule developed a coolant leak, and NASA astronaut Frank Rubio returned on a rescue Soyuz, extending his mission to a record-breaking 371 days for an American in space.


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