Coming home may be the most dangerous part of Artemis II.

A photo provided by NASA shows the heat shield of the Orion spacecraft, which was removed after the conclusion of the Artemis I mission, at the Kennedy Space Center in Florida on Feb. 3, 2023. The heat shield — the same design as the one on the Artemis II spacecraft — was unexpectedly pockmarked, with sizable chunks missing. (NASA via The New York Times) By KENNETH CHANG The Artemis II heat shield, NASA agrees, is flawed. The heat shield is the critical layer at the bottom of a spacecraft...

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