NASA's Artemis II Moon rocket arrives at the launch pad

"NASA's monster Moon rocket, the Space Launch System (SLS), has trundled out to the launch pad - though the upper stage and Orion spacecraft look uncannily like a prop from a 1980s British children's television show. After an almost 12-hour journey from the Vehicle Assembly Building (VAB) at Kennedy Space Center in Florida, the SLS, which will be used for the Artemis II mission, reached launch pad 39B at 1842 EST on Janaury 17."

"Several tests must be accomplished before launch, including a wet dress rehearsal (WDR), targeted for no later than February 2. During the WDR, countdown procedures are rehearsed, and the rocket is filled with cryogenic propellants, which are drained after the WDR is completed. Perhaps mindful of the leaks that plagued Artemis I during its 2022 launch campaign, NASA warned it "may roll back SLS and Orion to the Vehicle Assembly Building for additional work ahead of launch after the wet dress rehearsal.""

NASA's Space Launch System (SLS) moved from the Vehicle Assembly Building to Launch Pad 39B at Kennedy Space Center after an almost 12-hour transfer. The rocket will support Artemis II, a nearly ten-day crewed lunar flyby with a first launch window opening at 2141 EST on February 6 and opportunities through April 30. The four-person crew includes Reid Wiseman, Victor Glover, Christina Koch, and Jeremy Hansen. Prelaunch activities include a wet dress rehearsal targeted no later than February 2, involving cryogenic fueling and drain procedures and the possibility of rolling back for additional work. Artemis II experienced multiple delays, and a successful mission would pave the way for Artemis III and a planned lunar landing attempt.

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