The SLS wet dress rehearsal is the rocket's last major hurdle before launch.

The four astronauts of NASA's Artemis 2 moon mission went into quarantine on Jan. 23, keeping everything on track for a possible launch in early February.

The rehearsal, scheduled to run through early February 3, is meant to stress-test both machines and humans behind NASA’s ambitious return to deep space exploration.

The moon-bound crew entered a 14-day quarantine on Friday evening to keep them from contracting any illnesses that could delay launching.

NASA hopes to launch its crewed Artemis 2 moon mission in early February, but everything will have to go right to hit that ambitious target.

The rocket that will launch the Artemis 2 astronauts around the moon is rolling to the pad for its historic mission, which could lift off just a few weeks from now.

The four people preparing to fly around the Moon on Artemis II are already living as if launch day has begun. Long before they strap into Orion, their bodies, immune systems, and exposure to germs are being managed as tightly as any rocket valve or guidance computer.

NASA’s Artemis II rocket arrives at Launch Pad 39B, beginning final prelaunch tests ahead of the first crewed lunar mission in over 50 years, set for Feb. 2026.

The wet dress rehearsal is a full‑scale simulation of launch day

In the case of the Artemis II, a cold will act as a hardware fault: it may stop a complex system that otherwise is ready to do something. It is the reason why four-person crew consisting of Reid Wiseman,

The Artemis 2 astronauts who will become the first humans in more than 40 years to fly on a lunar mission are in quarantine. Here's what that means.