# NASA finds Artemis II trajectory cut heat-shield cracking and char loss

_Published Thursday, October 15, 2026 at 11:48 AM EDT · Science · Latest · Tier 2 — Notable_

![Side‑by‑side comparison of the heat shield backshell panels for NASA’s Artemis I and Artemis II missions. The left panel, labeled “Artemis I,” shows a circular heat shield with dark, irregularly weathered tiles. The right panel, labeled “Artemis II,” displays a similar circular heat shield with newer, more uniformly colored tiles. Both heat shields are mounted on blue support stands inside a clean, industrial facility with white walls and visible equipment in the background. — Primary](https://www.nasa.gov/wp-content/uploads/2026/10/combineda1anda2-heatshield4k.jpg)

NASA's post-flight assessment found that Orion's shorter reentry trajectory reduced heat-shield cracking and char loss by a factor of ten on Artemis II compared with Artemis I. Engineers identified nine spots of char loss on the heat-shield dish, compared with 103 on the earlier flight.

The trajectory change limited time spent in the temperature range associated with the Artemis I damage. NASA says aerodynamic and thermal performance matched engineering predictions. Engineers continue extracting samples and comparing laser scans with pre-flight measurements to assess material loss and support future heat-shield development.

## Sources

- [NASA](https://www.nasa.gov/missions/artemis/artemis-2/rigorous-analysis-confirms-nasas-artemis-ii-heat-shield-performance/)

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Canonical: https://techandbusiness.org/newswire/YiT9rgM_3Z4DEgPfV21ZY5
Published: 2026-10-15T15:48:56.757Z
Story chronology: 2026-10-15T14:57:21.000Z
Retrieved: 2026-10-15T19:01:21.970Z
Publisher: Tech & Business (techandbusiness.org)