NASA's Artemis II L-1 Countdown Status News Conference (March 31, 2026)

Why It Matters

Artemis II marks the first crewed deep‑space flight in half a century, proving the hardware and operational cadence needed for NASA’s lunar return and shaping the commercial space market’s role in future exploration.

Key Takeaways

• Launch window opens April 1 at 6:24 p.m. ET.
• Propellant loading begins 7:34 a.m., lasting approximately five and a half hours.
• Crew will board Orion by 2:00 p.m., completing final hatch checks.
• Weather forecast shows 80% go probability, low lightning and wind concerns.
• NASA emphasizes safety with air purge, inert gas changeover before fueling.

Summary

NASA held a pre‑launch news conference on March 31, 2026, to detail the L‑1 countdown for Artemis II, the agency’s first crewed Orion flight since the Apollo era. The two‑hour launch window opens at 6:24 p.m. Eastern on April 1, with the Space Launch System (SLS) poised on Pad 39B.

Jeff Spaulding outlined a tightly choreographed timeline: power‑up of Orion and the SLS’s Interim Cryogenic Propulsion Stage (ICPS) completed, communication checks finished, and pad ground systems locked down. Propellant loading of liquid oxygen and hydrogen will start at 7:34 a.m., lasting roughly 5.5 hours, followed by crew wake‑up at 9:45 a.m., suit donning, and final boarding by 2:00 p.m. The team has built in extra margin to start loading early if possible.

Spaulding noted the “smiles” in the firing room and the crew’s “great spirits” after multiple briefings, underscoring morale. Weather officer Mark Berger reported an 80 % probability of go, with breezy east‑southeast winds of 15‑20 kt and only a 5‑10 % lightning risk. A recent solar flare was deemed non‑threatening, as its energy was directed away from Earth.

Successful launch of Artemis II will validate the SLS‑Orion stack for subsequent lunar missions and keep NASA on track for the Artemis III landing later this decade. The tight schedule and rigorous safety protocols illustrate the agency’s commitment to a sustainable, crewed return to the Moon, with downstream impacts on commercial partnerships and deep‑space exploration funding.

Original Description

NASA leaders are providing a status update on final preparations before the launch of Artemis II as soon as April 1. Participants include:

- Jeff Spaulding, test director with the Exploration Ground Systems program, NASA Kennedy

- Mark Burger, launch weather officer, 45th Weather Squadron Cape Canaveral Space Force Station

NASA's Artemis II mission around the Moon is currently scheduled to lift off from Kennedy Space Center on April 1. The two-hour launch window starts at 6:24 p.m. EDT (2224 UTC).

After launching into space atop NASA's Space Launch System (SLS) rocket, the Artemis II astronauts will journey around the Moon and back in their Orion spacecraft, named Integrity, on an approximately 10-day mission.

Under Artemis, NASA will send astronauts on increasingly difficult missions to explore more of the Moon for scientific discovery, economic benefits, and to build on our foundation for the first crewed missions to Mars.

More about coverage of our Artemis II mission around the Moon: https://go.nasa.gov/4rWyZNY

Credit: NASA