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Starliner launch delayed to at least May 17 to replace suspect valve in Atlas 5 rocket
After analyzing data following a launch scrub Monday, United Launch Alliance managers decided to haul the Atlas 5 rocket carrying ... relief valve in the rocket's Centaur upper stage liquid ...
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Planned crewed launch of Boeing's Starliner spacecraft scrubbed
An Atlas 5 rocket ... 54 rocket's Centaur upper stage and determine whether it is necessary to replace the valve." If the analysis concludes it's safe to launch the Atlas 5 as is, NASA, Boeing ...