Boeing Starliner launch delayed again as it returns to the factory for troubleshooting

Boeing’s Starliner astronaut capsule won’t be launching to the International Space Station until it’s gone through “deeper-level troubleshooting” to fix an issue with stuck propulsion system valves, according to a press release from the company. That troubleshooting means removing the capsule from the Atlas V rocket it’s been coupled to and bringing it back to Boeing’s facility.

The spacecraft’s initial launch attempt late last month was scrubbed hours before liftoff after engineers noticed a group of fuel valves in the Starliner’s propulsion section weren’t positioned as programmed. That valve issue, whose cause remains a mystery, is the latest engineering predicament to curse Starliner nearly two years after the capsule failed its...

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