NASA Published Preliminary Artemis II Lunar Report
The 130-page document details geological observations from the crew's April 2026 lunar flyby.
Updated on Oct. 11, 2026 in Space
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NASA has released the Artemis II Preliminary Lunar Science Report, documenting geological findings from the mission's April 2026 flyby. The report analyzes data collected by the crew as they passed 4,000 miles from the moon's surface.
Why it matters
These observations are intended to inform the selection of future landing and exploration sites on the lunar surface. The gathered data helps scientists understand specific geological formations that could be critical for upcoming human missions.
The report compiles 814 gigabytes of recordings and observations collected during the Orion capsule's flyby. Researchers utilized these recordings to document features like the Orientale Basin, which is approximately three times the width of Massachusetts.
The players
NASA
The United States government agency responsible for the civilian space program and aeronautics research.
Artemis II
A crewed lunar mission that conducted a flyby of the moon as part of a multi-stage program to return humans to the lunar surface.
The details
The crew spent over two years training for the mission through classroom study, crater site visits, and simulations. They documented volcanic features at the Aristarchus Plateau, including dark lava deposits and green magnesium-rich glass beads.
Timeline
April 6, 2026: The Artemis II crew conducted the lunar flyby.
October 2026: NASA published the Preliminary Lunar Science Report.
The Big Picture
The report extends the research foundation established by the Artemis program. By cataloging detailed surface features, it bridges the gap between orbital flyby data and the precision required for future lunar landings.
The geological data helps refine the criteria for future landing sites and potential resource utilization. This research informs the long-term feasibility of human presence on the moon.
The takeaway
This report highlights the depth of data captured by modern crewed flybys to prepare for future surface exploration. Readers interested in lunar geology can follow future site selection updates as NASA prepares for upcoming landing missions.
Further reading
Find more updates on lunar exploration and mission data on the United States Space section.
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