NASA flies Artemis II with known heat shield flaw despite expert opposition to crewed mission

NASA launched four astronauts aboard the Orion spacecraft around the moon in 2026 despite a documented defect in the heat shield coating on the spacecraft's bottom section. Engineers and safety experts urged the agency not to fly humans on the mission until the flaw was resolved. The decision puts crew safety in the hands of NASA's confidence in a workaround rather than a structural fix. Splashdown and reentry will test whether the heat shield performs as predicted or fails catastrophically.