NASA still doesn’t understand root cause of Orion heat shield issue

Enlarge / NASA's Orion spacecraft descends toward the Pacific Ocean on December 11, 2021, at the end of the Artemis I mission. (credit: NASA)

NASA officials declared the Artemis I mission successful in late 2021, and it's hard to argue with that assessment. The Space Launch System rocket and Orion spacecraft performed nearly flawlessly on an unpiloted flight that took it around the Moon and back to Earth, setting the stage for the Artemis II, the program's first crew mission.