NASA's Artemis II crew runs through launch day countdown test at KSC

A major step toward launch day is complete as NASA's Artemis II astronauts ran through a countdown demonstration test.
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Artemis II crew completes critical countdown rehearsal ahead of moon mission

NASA has taken another significant step toward returning humans to the Moon. On December 20, 2025, the Artemis II crew and launch teams completed a major countdown demonstration at the Kennedy Space ...