NASA Finds Far Less Damage on the Heat Shield That Brought Artemis II Home

NASA has finished the engineering review of the heat shield that brought the Artemis II crew home, and reports nine spots of char loss on the shield's dish, against 103 after the uncrewed Artemis I flight.

The dish is the part of the Orion capsule that takes the heat of reentry, and NASA says the review set out to establish whether the thermal protection system kept the astronauts and Orion's systems safe as the spacecraft came back through the atmosphere. Artemis II, which splashed down April 10, 2026, was the first time a crew flew aboard Orion.

Orion's return path was changed after the investigation into cracking and char loss on the Artemis I shield. The agency shortened the maximum distance the capsule was allowed to fly between entering the atmosphere and hitting the water, which it says limits how long the shield spends in the temperature range where the Artemis I damage occurred. In its post-flight assessment review, NASA states that the shorter path cut cracking and char loss by a factor of 10, and describes that as proof that the trajectory change was effective.

The dish is built from 186 blocks of Avcoat, a material designed to char and wear away so the heat does not reach the crew, and outside temperatures passed 4,000 °F on the way down. The ceramic tiles on the capsule's sloped backshell, including the seals around windows, vents, thrusters and the side hatch, showed no signs of overheating.

Work on the shield continues. Engineers at NASA's Marshall Space Flight Center in Huntsville, Alabama, are still cutting samples out of it, and laser scans of the surface are being compared against pre-flight measurements to work out how much material burned off. The shield for Artemis III, whose Avcoat blocks were redesigned to be more uniform, was fitted to that spacecraft's crew module in July 2026.