NASA likely to delay Artemis II after SLS helium-flow anomaly; rollback to VAB considered, March launch window jeopardized
NASA discovered an interrupted helium flow to the SLS upper stage and is preparing to roll the SLS–Orion stack back to the Vehicle Assembly Building for troubleshooting. Agency officials say the anomaly will "almost assuredly" impact the March Artemis II launch window and could delay the crewed lunar flyby.