Boeing Starliner's First Crewed Mission Delayed Due to Safety Concerns

The launch of Boeing's Starliner was postponed after a critical valve issue was detected, marking another setback in its spaceflight program.

The mission was halted just two hours before liftoff when engineers detected unusual vibrations in a liquid oxygen relief valve.
Astronauts Butch Wilmore and Suni Williams were already aboard the spacecraft, set for a 10-day test flight to the International Space Station.
The delay adds to a history of technical challenges and postponements that have plagued the Starliner program since its inception.
NASA and Boeing are assessing the situation, with a rescheduled launch aimed for no earlier than Friday.
Elon Musk criticized Boeing for its delays, highlighting SpaceX's earlier success with similar missions under NASA's Commercial Crew Program.