Crews transport Artemis IV liquid hydrogen tank at Michoud Assembly Facility

NASA crews have moved the massive liquid hydrogen tank for the Artemis IV mission at the Michoud Assembly Facility in New Orleans. The 130-foot-tall tank was transported from a production cell inside the main factory building to a detached test building on the 829-acre site on May 15, 2026. This tank will become part of the core stage for the Space Launch System (SLS) rocket, supplying super-cold propellant to one of four RS-25 engines. The move marks a key step in assembling the rocket for the Artemis IV mission, which aims to return humans to the Moon. The tank's successful relocation allows engineers to begin testing and integration work in the new facility. NASA officials have not yet announced a launch date for Artemis IV, but this development brings the mission closer to reality.