NASA’s Artemis II mission has taken a major step forward as the Space Launch System (SLS) rocket and Orion spacecraft completed their rollout to the launch pad at Kennedy Space Center. This milestone marks the transition from assembly to final launch preparations for the first crewed Artemis mission, which will send astronauts around the Moon for the first time in more than five decades.
The successful move places Artemis II firmly on the path toward its upcoming wet dress rehearsal and, ultimately, its historic lunar flight.
Artemis II arrives at Launch Pad 39B
At 6:42 p.m. EST on Saturday, 17 January, NASA’s Artemis II rocket reached Launch Pad 39B after a nearly 12-hour journey from the Vehicle Assembly Building at Kennedy Space Center. The fully stacked SLS rocket and Orion spacecraft were transported atop NASA’s crawler-transporter 2, travelling at a maximum speed of just 0.82 mph.
The rollout covered approximately four miles and required careful coordination due to the size and complexity of the Moon-bound launch vehicle. Once outside the VAB, teams paused the rollout to reposition the crew access arm, a critical structure that will allow astronauts and closeout crews to enter the Orion spacecraft on launch day.
Preparing for the wet dress rehearsal
With the rocket now at the pad, engineers and technicians will begin preparing Artemis II for its wet dress rehearsal, a full test of fueling operations and countdown procedures. This rehearsal is targeted for no later than 2 February.
During the test, teams will load the SLS rocket with cryogenic propellants, run through the countdown sequence, and practise safely draining the super-cold fuels. These steps are essential to validating launch-day operations ahead of the first crewed Artemis flight.
NASA has indicated that additional wet dress rehearsals may be conducted if needed. Depending on the results, the SLS and Orion stack could be rolled back to the Vehicle Assembly Building for further work before launch.
The Artemis II crew and mission profile
The Artemis II mission will carry four astronauts on an approximately 10-day journey around the Moon and back to Earth. The crew includes NASA astronauts Reid Wiseman, Victor Glover, and Christina Koch, along with Canadian Space Agency astronaut Jeremy Hansen.
This mission will test life-support systems, propulsion, navigation, and spacecraft performance in deep space, providing critical data for future lunar surface missions under the Artemis programme.
Building toward a sustained lunar presence
Artemis II represents a key step in NASA’s long-term exploration strategy. By proving the systems required to safely carry humans around the Moon, the mission lays the groundwork for future landings and a sustained human presence on the lunar surface.
These efforts are also designed to prepare for more ambitious goals, including eventual crewed missions to Mars. Each milestone, from rollout to rehearsal to launch, brings NASA closer to expanding human exploration deeper into the solar system.
A historic moment in modern lunar exploration
The arrival of the Artemis II rocket at Launch Pad 39B marks a pivotal moment in the return of humans to lunar space. As final tests and rehearsals approach, anticipation continues to build for a mission that will reconnect a new generation of astronauts with humanity’s next steps beyond Earth.
