
NASA's Artemis program is working to achieve something the U.S. hasn't done in more than 50 years: send humans back to the moon (and establish facilities needed for sustainable living on the lunar surface, which has never been done).
To get there, though, many steps have to be taken, from the big ones, like making sure the Space Launch System (SLS) rocket and Orion crew capsule integrate perfectly, to the small ones, like ensuring each astronaut's suit fits comfortably.