Artemis II CDDT – Suit Up and Walkout

From left, NASA astronauts Reid Wiseman, Artemis II commander, Christina Koch, Artemis II mission specialist, CSA (Canadian Space Agency) astronaut Jeremy Hansen, Artemis II mission specialist, and NASA astronaut Victor Glover, Artemis II pilot, depart the Neil A. Armstrong Operations and Checkout Building to travel to the Vehicle Assembly Building to board their Orion spacecraft atop NASA’s SLS (Space Launch System) rocket as part of the Artemis II Countdown Demonstration Test on Saturday, Dec. 20, 2025 at NASA’s Kennedy Space Center in Florida. For this operation, the Artemis II crew and launch team are simulating the launch day timeline including suit-up, walkout, and climbing in and out of the spacecraft. Through the Artemis campaign, NASA will send astronauts to explore the Moon for scientific discovery, economic benefits, and to build the foundation for the first crewed missions to Mars, for the benefit of all.