NASA Gives Go-Ahead for Artemis 2 Launch After Readiness Review
KENNEDY SPACE CENTER, Fla. (AP) — NASA concluded its flight readiness review for the Artemis 2 mission, approving the launch of four astronauts on a lunar flyby in April 2026, officials said. The agency plans to roll out the Space Launch System rocket and Orion spacecraft from the Vehicle Assembly Building to Launch Pad 39B next week, targeting liftoff as early as April 1.
The mission marks the first crewed flight to the moon's vicinity since Apollo 17 in 1972 and will test systems for future lunar landings, according to NASA. Engineers resolved recent technical issues, including hydrogen fuel leaks and an upper stage propellant pressurization problem, enabling the go-ahead, sources confirmed.
The launch window runs from April 1 to April 6, 2026, due to lunar and Earth alignment requirements, NASA said. A launch on April 1 would occur at 6:24 p.m. EDT, with the nine-day mission ending in a Pacific Ocean splashdown. Delays beyond April 6 would push the attempt back by about one month, officials noted.
Crew members include NASA commander Reid Wiseman, pilot Victor Glover, mission specialist Christina Koch and Canadian Space Agency astronaut Jeremy Hansen. They will fly aboard the Orion spacecraft, propelled by the SLS Block 1 rocket, for a mission that builds on the uncrewed Artemis 1 test in 2022, according to agency statements.
"All the teams polled ‘go’ to launch and fly Artemis 2 around the moon, pending completion of some of the work before we roll out to the launch pad," said Lori Glaze, NASA associate administrator for exploration systems development, in a briefing reported by Spaceflight Now.
Technical fixes addressed hydrogen leaks at the rocket's base, where engineers replaced umbilical seals during pad operations, NASA reported. A separate issue involved a displaced seal in the upper stage's helium quick-disconnect fitting, which pressurizes propellants. Crews rolled the rocket back to the Vehicle Assembly Building for repairs using access platforms, resolving the problem, according to mission updates.
The readiness review followed a successful countdown demonstration test in December 2025, where teams practiced a full integrated countdown and crew boarded an Orion mockup, sources said. That test occurred at Launch Pad 39B and validated procedures ahead of the crewed flight, NASA confirmed.
Artemis 2 serves as a high-risk test flight to demonstrate deep-space operations, including launch, lunar flyby and reentry, officials emphasized. "Just a reminder to everybody ... it’s a test flight, and it is not without risk. But our team and our hardware are ready," Glaze added in the same briefing.
The mission involves no lunar landing but will loop around the moon, testing the Orion capsule's life support and navigation systems for about 10 days, according to NASA's Artemis 2 mission page. It advances capabilities needed for Artemis 3, planned for a lunar landing around 2027, and supports longer-term goals like Mars exploration, agency documents stated.
International partnership plays a key role, with Hansen representing the Canadian Space Agency under the Artemis Accords, NASA said. The SLS rocket, managed at Kennedy Space Center, integrates the core stage for hydrogen fuel and the interim cryogenic propulsion stage for upper maneuvers.
Prior delays shifted the target from early February 2026, stemming from the helium seal displacement that required Vehicle Assembly Building access, sources reported. Engineers identified the issue during pad testing and completed repairs without further anomalies, according to Spaceflight Now.
NASA's 2025 progress report highlighted momentum under the new administration, noting significant steps toward the Artemis 2 test flight in early 2026. "NASA Ignites New Golden Age of Exploration, Innovation in 2025 ... marked significant progress toward the Artemis II test flight early next year," the report stated.
The rollout next week will use the mobile launcher and crew access arm to position the stack at Pad 39B, officials said. Final pre-launch work includes system checks and propellant loading rehearsals, pending weather and any emerging issues.
Artemis 2 aligns with broader U.S. space efforts, including competition from SpaceX's Starship for lunar missions, but focuses on NASA's human-rated systems, according to agency overviews. The flight will validate end-to-end operations for sustained lunar presence.
No major contradictions appeared across sources, with high agreement on the April 2026 timeline, crew details and resolved issues, analysts noted. Minor variances in mission duration, listed as nine or 10 days, likely reflect rounding in planning documents.
The mission underscores challenges in mega-rocket development, as SLS has faced delays common to new launch vehicles, NASA acknowledged. Successful completion would prove reliability for the Artemis program's international and commercial partners.
Officials plan live updates on rollout and launch preparations via NASA channels. The agency emphasized safety protocols for the test flight, given its role in paving the way for crewed deep-space exploration.
