- The launch of Boeing's first crewed flight to the International Space Station, known as the Starliner, was called off just minutes before the scheduled liftoff. The mission, which was set to carry two NASA astronauts, was postponed due to an issue with the spacecraft's propulsion system.

- This was the second delay for the Starliner mission, which was initially scheduled to launch in 2019 but faced a series of setbacks, including a failed uncrewed test flight in 2019 that prevented it from docking with the International Space Station. The latest delay is a disappointment for Boeing, which has been working to regain its footing after the grounding of its 737 MAX aircraft.

- NASA and Boeing have not yet announced a new target launch date for the Starliner mission. The delay is likely to further extend the timeline for the spacecraft to begin regular crew rotation flights to the International Space Station, which is currently being served solely by SpaceX's Crew Dragon spacecraft.