A real-time look inside spacecraft heat shields during extreme heat conditions

by Gianna FazioLiu, Lawrence Berkeley National Laboratory

edited by Gaby Clark , reviewed by Robert Egan

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Add as preferred source A heat shield removed from NASA's Orion spacecraft and inspected following the Artemis I test flight. Credit: NASA When a spacecraft reenters Earth's atmosphere at hypersonic velocities, its protective heat shield faces extreme conditions, including temperatures beyond 3,000 degrees Fahrenheit (1,650 degrees Celsius). To survive, the shield relies on specialized materials that absorb heat as they degrade in a controlled process called ablation, sacrificing the shield's outer layers to protect the vehicle and crew within.