https://arstechnica.com/tech-policy/2021/07/jeff-bezos-loses-attempt-to-block-the-moon-landing-contract-nasa-gave-to-spacex/

The US Government Accountability Office (GAO) today rejected Blue Origin's attempt to block the lunar-landing contract that NASA awarded to SpaceX. The GAO also rejected a similar protest filed by Dynetics.

NASA in April 2020 selected SpaceX, Blue Origin, and Dynetics to design and build human landing systems. But in April 2021, NASA decided to go only with SpaceX and its Starship vehicle for the Artemis program, which is NASA's plan to return humans to the Moon by 2024.