NASA said Friday it’s adding an extra moon mission by Artemis astronauts before attempting a high-risk lunar landing with a crew.

NASA on Friday announced an abrupt change to its pathway to getting astronauts back on the lunar surface, opting to add in an additional crewed test flight before attempting to land.

But the additional mission gives NASA more practice launching its rocket and allows the agency and its partners to collect additional data as they finalize moon-landing hardware.