Technology & Science
NASA Rolls Artemis II SLS Back to VAB After Helium System Failure, Pushing Crewed Moon Fly-by to April
A helium-pressurization malfunction in the Space Launch System’s upper stage forced NASA on 25 Feb 2026 to haul the 322-ft Artemis II stack the four miles back to the Vehicle Assembly Building, slipping the first crewed lunar mission of the program from the March window to no earlier than 1 April.