NASA’s Space Launch System (SLS) rocket, along with the Orion spacecraft, has begun its journey back to the launch pad after undergoing repairs at the Kennedy Space Center’s Vehicle Assembly Building. The 322-foot-tall SLS, mounted on the 400-foot-tall Mobile Launcher, is expected to reach pad 39B in preparation for a launch attempt for the Artemis 2 mission, targeted for no earlier than April 1.
The initial movement of the crawler transporter, responsible for transporting the launch platform, was anticipated around 8:00 p.m. EDT (0000 UTC) on March 20, 2026. However, due to high winds at the Kennedy Space Center, the movement did not commence until approximately 12:20 a.m. EDT (0420 UTC). NASA estimates that the transport will take about 12 hours to complete.
Helium Flow Issue Resolved
The SLS rocket and Orion spacecraft were returned to the Vehicle Assembly Building to address a helium flow problem identified on February 21, following a successful fueling test at pad 39B. This issue prompted NASA to postpone the planned March launch attempt in favor of an April timeline. Technicians have since resolved the helium issue and conducted additional prelaunch preparations, including replacing the batteries associated with the flight termination system on the solid rocket boosters, core stage, and upper stage.
Artemis 2 Mission Details
The Artemis 2 mission will mark a significant milestone as it involves a crewed flight around the Moon, with astronauts Reid Wiseman, Victor Glover, Christina Koch, and Canadian Space Agency astronaut Jeremy Hansen aboard the Orion spacecraft. The mission is expected to culminate in a splashdown in the Pacific Ocean approximately 10 days after liftoff. This flight will be the first instance of a crew living and working on the Orion spacecraft, serving as a precursor to future crewed missions under the Artemis program.
Future of the Artemis Program
Recent announcements from NASA Administrator Jared Isaacman indicate changes to the Artemis program, including the rescheduling of the first Moon landing from the third to the fourth Artemis mission. The Artemis 3 flight will now serve as a demonstration of Orion docking with either SpaceX’s Starship lunar lander or Blue Origin’s Blue Moon Mk.2 lunar lander, or potentially both. Isaacman noted that the public can expect more clarity regarding the specifics of the Artemis 3 mission within the next 60 to 90 days.
During a recent press briefing, European Space Agency (ESA) Director General Josef Aschbacher expressed anticipation for upcoming discussions with NASA regarding the Artemis architecture, emphasizing the united support from ESA member states for coordinated activities.
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