Core stage of rocket heads to Kennedy Space Center in preparation for Artemis III mission.

NASA has made significant progress on its Artemis III mission, with the largest segment of the Space Launch System (SLS) rocket core stage now en route to the Kennedy Space Center (KSC) in Florida. On Monday, the top four-fifths of the SLS core stage was loaded onto NASA’s Pegasus barge at the Michoud Assembly Facility in New Orleans for transportation to KSC. The barge is expected to arrive at its destination shortly.

The Artemis III mission, scheduled for mid-2027, aims to bring humans back to the lunar surface for the first time since the Apollo program. The rocket’s core stage comprises essential components, including the liquid hydrogen tank, liquid oxygen tank, intertank, and forward skirt. Prime contractor Boeing is finalizing these crucial elements, with all eyes on the upcoming integration efforts at KSC.

Lori Glaze, acting associate administrator of the Exploration Systems Development Mission Directorate at NASA, emphasized the importance of this milestone, highlighting that the movement of the SLS hardware represents a significant step towards returning humans to the moon and eventually embarking on crewed missions to Mars. This is considered the backbone of the Artemis III mission.

Following the successful completion of Artemis II, which involved a crewed lunar flyby, NASA is adjusting its focus for the next mission. While still a crewed endeavor, Artemis III will primarily serve to test docking capabilities with lunar landers in development by SpaceX and Blue Origin. The ambitious goal of returning humans to the lunar surface is slated for Artemis IV, targeted for 2028.

As preparations continue, NASA awaits the arrival of four RS-25 engines, repurposed from the Space Shuttle program. These engines will be integrated into the core stage and are expected to reach KSC in July from the Stennis Space Center in Mississippi, where they have undergone rigorous testing.

In anticipation of the upcoming missions, the mobile launcher used for Artemis II has returned to the Vehicle Assembly Building for necessary repairs after withstanding the 8.8 million pounds of thrust generated during its launch. Once fully assembled, the mobile launcher will accommodate the completed core stage, two solid rocket boosters from Northrop Grumman, and the upper stage that will ultimately be paired with the next Orion spacecraft.

Additionally, the Orion spacecraft for the Artemis III mission and its European Service Module are already at KSC. The interim cryogenic propulsion stage (ICPS), originally intended for Artemis III, may be retained for the subsequent Artemis IV mission, as the mission’s objectives may not necessitate it.

As NASA navigates the complexities of the Artemis program, attention is also directed toward SpaceX and Blue Origin, whose lunar landers—Starship and Blue Moon—are integral to the success of the Artemis missions. Recent challenges for Blue Origin, including setbacks with its New Glenn rocket, underscore the dynamic nature of space exploration. Meanwhile, SpaceX is progressing on its next iteration of Starship, aiming for operational launches soon.

Overall, the Artemis program reflects a comprehensive effort that combines technical innovation and collaboration among various agencies and contractors, with a shared vision of facilitating human exploration beyond Earth. The upcoming phases are crucial in solidifying partnerships and ensuring robust preparation for future lunar missions.