SpaceX’s Starship, which won a NASA award in April, is the biggest example of NASA’s use of services for the Artemis program but not the only one. Credit: SpaceX

WASHINGTON — The Government Accountability Office offered more details about its decision to reject protests filed by two companies of NASA’s Human Landing System (HLS) award to SpaceX.

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Jeff Foust writes about space policy, commercial space, and related topics for SpaceNews. He earned a Ph.D. in planetary sciences from the Massachusetts Institute of Technology and a bachelor’s degree with honors in geophysics and planetary science...