NASA and SpaceX Human Spaceflight

Following repeated liquid‑hydrogen leak repairs and a wet dress rehearsal, technicians discovered an upper‑stage helium repressurization failure that prompted NASA to roll the Artemis II SLS back to the Vehicle Assembly Building for diagnostics and repairs, removing March launch opportunities and pushing the earliest crewed attempt into April while the crew left quarantine. New NASA Administrator Jared Isaacman announced a program overhaul that redefines Artemis III as a 2027 Earth‑orbit test to rendezvous and dock with commercial lunar landers and shifts the first crewed lunar landings to Artemis IV and V (targeted in 2028) to “buy down” risk, standardize the SLS upper stage and establish a steadier launch cadence.