Artemis II's heat shield held up far better than Artemis I

Six months ago, Orion splashed down carrying Artemis II's astronauts back from a loop around the Moon. NASA spent that time studying the capsule's heat shield up close. This month, it confirmed the shield performed far better than the one on Artemis I's 2022 test flight. Divers counted just 9 small charred spots this time, versus 103 after Artemis I — a tenfold drop.

Artemis I flew without a crew. Even so, its heat shield lost chunks of char in ways engineers didn't expect. That was a real worry heading into Artemis II. It was NASA's first Artemis flight carrying astronauts. So this time, mission planners shortened Orion's path through the atmosphere. That cut the time the shield spent at the temperatures blamed for the earlier damage. The fix seems to have worked. NASA still hasn't said precisely how much material wore away. It has only said the visible damage was far smaller.

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Will this same heat shield design hold up again on Artemis III? That mission will land astronauts on the Moon for the first time since Apollo. Artemis III faces a harder reentry than either test before it. NASA's engineers now have real flight data to work from. Before, they only had models. That should make the next answer more certain, not less.