The liquid hydrogen tank that will be part of the Space Launch System rockets core stage is being prepared for the Artemis III mission at NASAs Michoud Assembly Facility in New Orleans. Eventually, the tank will be connected to the engine section that will house the RS-25 engines. The engine section is still being outfitted, so for this test crews attached an engine section aft simulator during proof testing on January 27, 2022. Once the aft simulator is attached, the LH2 tank undergoes non-destructive evaluation, which will test weld strength and ensure the tank is structurally sound. The SLS core stage is made up of five unique elements: the forward skirt, liquid oxygen tank, intertank, liquid hydrogen tank, and the engine section. The tank holds 537,000 gallons of liquid hydrogen cooled to minus 432 degrees Fahrenheit and sits between the core stages intertank and engine section. The liquid hydrogen hardware, along with the liquid oxygen tank, will provide propellant to the four