NASA is preparing to move forward with a key milestone as it readies the Space Launch System (SLS) rocket and Orion spacecraft for the Artemis II mission. A “wet dress rehearsal” allows launch teams to practice fueling and countdown procedures under conditions that closely mirror launch day, much like a full dress rehearsal before a Broadway opening. Artemis I wet dress rehearsalOnce fueling is complete, teams conduct a simulated countdown that runs to just short of liftoff. The most visible members of the Artemis II team, however, will not take part in the wet dress rehearsal. Results from the wet dress rehearsal will help mission managers assess overall system readiness and make final decisions about a specific launch date, which could be as early as February 6 at 9:41 p.m. EST.