At sunrise on Oct. 30, 2020, the mobile launcher for the Artemis I mission, atop crawler-transporter 2, moves slowly down the ramp at Launch Pad 39B to return to the Vehicle Assembly Building at NASA’s Kennedy Space Center in Florida. In view in the foreground is the liquid hydrogen storage tank. The nearly 400-foot-tall mobile launcher was at the pad for 10 days, while engineers with Exploration Ground Systems and Jacobs performed several tasks, including a timing test to validate the launch team’s countdown timeline, and a thorough, top-to-bottom wash down of the mobile launcher to remove any debris remaining from construction and installation of the umbilical arms. Artemis I will test the Orion spacecraft and Space Launch System as an integrated system ahead of crewed flights to the Moon. Under the Artemis program, NASA will land the first woman and the next man on the Moon in 2024.