[NASA] Artemis II Crew Rehearse Launch Day Demonstration

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The four astronauts set to fly around the Moon during NASA’s Artemis II test flight depart the Neil A. Armstrong Operations and Checkout Building at the agency’s Kennedy Space Center in Florida, during a dress rehearsal for launch day on Dec. 20, 2025. From left are CSA (********* Space Agency) astronaut Jeremy Hansen, NASA astronauts Victor Glover, Reid Wiseman, and Christina Koch.

The launch day rehearsal, called a countdown demonstration test, simulated the launch day timeline, including the suiting up in their spacesuits and climbing in and out of their spacecraft. Because the SLS (Space Launch System) rocket upon which they will launch is not yet at the launch pad, the crew boarded Orion inside Kennedy’s Vehicle Assembly Building, where engineers are conducting final preparations on the spacecraft, rocket, and ground systems.  

Through Artemis, NASA will send astronauts to explore the Moon for scientific discovery, economic benefits, and build the foundation for the first crewed missions to Mars.

Photo Credit: NASA/Jim Ross

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