NASA targets February 19 for second Artemis II rehearsal fueling

Preparations at Florida’s launch site continue this week as NASA moves toward another full rehearsal for its Artemis II mission. Engineers are working through final ground checks after a recent partial fuelling attempt highlighted an issue with liquid hydrogen flow. The agency is now targeting 19 February for a second wet dress rehearsal of the Space Launch System rocket, a key step before committing to launch. The exercise will test fuelling operations, countdown procedures and scrub scenarios without lifting off. Managers say the data gathered will shape the final timeline for Artemis II, which is planned as the first crewed flight of the Artemis programme. A formal launch date will follow only after review of rehearsal results and pad readiness.The rehearsal centres on the NASA rocket stack at Kennedy Space Center. Teams will load cryogenic propellants into the Space Launch System, then run a detailed countdown simulation.Controllers are due at their consoles on the evening of 17 February to begin a countdown lasting almost 50 hours. A simulated launch time is set for the evening of 19 February within a four-hour window. The crew assigned to Artemis II will not take part, though closeout teams will practise hatch operations on the Orion spacecraft. The aim is familiarity. Console teams rehearse the rhythm of launch day, step by step, including pauses and resets.Earlier in the month, a partial fuelling test pointed to reduced liquid hydrogen flow through ground support equipment. Over the weekend, engineers replaced a suspected filter and reconnected the line. Environmental conditions around the pad are being stabilised again before tanking begins.The earlier test yielded enough data to plan the second rehearsal. Managers appear cautious, not hurried. Hydrogen systems remain sensitive, and fuelling operations have delayed past Artemis attempts.During the drill, two terminal count runs are scheduled for the operators. The time will be frozen at several predetermined moments, such as at T minus 90 seconds, and then set back to T minus 10 minutes. After that, the countdown will continue again up to the point just before 30 seconds when it stops.This method reflects actual launch situations when bad weather or technical problems can cause the launch to be scrubbed. Rehearsing the recycle procedure enables the teams to test their decision-making skills under the pressure of time.NASA has not confirmed a launch date for Artemis II. Managers indicate that 6 March is the earliest practical opportunity if the rehearsal succeeds and data reviews progress smoothly. A continuous live stream of the rocket remains online. Additional camera feeds are expected during fuelling. For now, attention stays on the rehearsal, quiet but necessary, before anything moves skyward.