From left to right, Jim Keys, Pilot; Dottie Duke, wife of Charlie Duke, Charlie Duke, NASA Astronaut (former); Christina Korp, Assistant to Charlie Duke; and Nicole Stott, NASA Astronaut (former) pose in front of the massive Space Launch System (SLS) core stage in Kennedy Space Center's Vehicle Assembly Building (VAB) in Florida on May 10, 2021. Inside the VAB, the SLS core stage is being prepared for integration with the completed stack of solid rocket boosters atop the mobile launcher ahead of the Artemis I launch. The first in a series of increasingly complex missions, Artemis I will test SLS and Orion as an integrated system prior to crewed flights to the Moon.