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NASA Confirms Orion Heat Shield Performed Successfully During the Artemis II Lunar Mission

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NASA confirmed that the Orion spacecraft heat shield performed as expected during the Artemis II mission, which carried four astronauts around the Moon. During atmospheric reentry, Orion reached 39 times the speed of sound and faced external temperatures exceeding 4,000 degrees Fahrenheit.

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NASA confirmed that the Orion spacecraft heat shield performed as expected during the Artemis II mission, which carried four astronauts around the Moon. During atmospheric reentry, Orion reached 39 times the speed of sound and faced external temperatures exceeding 4,000 degrees Fahrenheit. Inside the cabin, temperatures stayed comfortable in the mid-70 degree range.

Following lessons from the uncrewed Artemis I flight, NASA shortened the spacecraft’s reentry trajectory. This adjustment reduced the heat shield's time in critical temperature ranges, cutting cracking and char loss by a factor of ten. Engineers found only nine spots of char loss, compared to 103 during the first flight.

The thermal protection system uses 186 unique blocks of an ablative material called Avcoat, which safely melts away to dissipate heat. Experts at NASA’s Marshall Space Flight Center are currently performing sample extractions and x-ray scans on the hardware. The successful data review supports preparations for Artemis III and future lunar landings.

Technicians at Kennedy Space Center recently attached the heat shield for the next Orion crew module and successfully powered up the joined modules.

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NASA — Recently Published

Original author: Elyna Niles-Carnes

Original publication: 15 October 2026 20:27

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