NEW ORLEANS, La. - NASA has completed assembly of the upper part of the core stage for the Space Launch System (SLS) rocket that will send the Artemis II crew on its lunar mission. Boeing, the lead core stage contractor, completed joining the forward part of the rocket, and then lifted it out of the assembly structure at NASA's Michoud Assembly Facility. The last piece to be added will be the engine section, which is currently in a separate assembly area being outfitted with propulsion systems that connect to the engines. The engine section will house the four RS-25 engines that power the rocket. (Source: Space Daily, 12/17/21)