NASA astronauts Josh Cassada, left, and Sunita “Suni” Williams add their signatures to an Artemis “We Are Going” banner inside the Multi-Payload Processing Facility (MPPF) during a visit to NASA’s Kennedy Space Center in Florida on April 6, 2021. During their time at Kennedy, they also had the opportunity to view the Orion spacecraft and Space Launch System’s (SLS) Interim Cryogenic Propulsion Stage – both being serviced inside the MPPF ahead of the Artemis I launch. The first in a series of increasingly complex missions, Artemis I will test Orion and SLS as an integrated system prior to crewed flights to the Moon.