IT Home, October 12: On October 7 local time, NASA announced that it has uploaded over 800 GB of lunar science data collected from the Artemis II crewed lunar flyby mission to the Planetary Data System (PDS), making it available to researchers and the public worldwide.
According to NASA's official announcement, this collection includes over 11,000 full-resolution lunar photographs and videos, approximately 8.5 hours of audio recordings of astronauts' scientific observations, and handwritten annotations made by astronauts on the images, some of which have not been previously released.
NASA stated that this data primarily captures lunar observations made during the Artemis II mission in April 2026. The mission launched on April 1 and returned on April 10, lasting approximately nine days. It is the first crewed lunar flyby of the Artemis program and among the first planetary science data sets in over half a century primarily formed through direct human observation. Astronauts’ real-time assessments of the Moon’s color, brightness, and surface changes complement data accumulated during the Apollo missions and by robotic probes.
Among the publicly released data, one notable finding is five extremely faint impact flashes observed by astronauts near the far side of the Moon. According to NASA's release on October 7, astronauts aboard the Orion spacecraft detected five faint, pinprick-like flashes on the lunar surface and marked their locations on the images. At the time, Orion was approximately 46,000 miles (IT之家 note: about 74,030 kilometers) from the Moon.
The NASA science team interpreted these flashes as light produced by rock fragments impacting the lunar surface. According to NASA’s published data, these observations occurred during periods when the Moon was blocking the Sun and the surrounding environment was darker. Researchers analyzed the impact events based on information such as the brightness of the flashes, noting that such observations help study lunar surface impact activity. The exact size of the impacting objects still needs to be confirmed through further analysis.
In addition to images and audio, NASA also released the Artemis II Preliminary Lunar Science Report, the Lunar Science Operations Report, and the Lunar Science Data User Guide, which detail the development and execution of the mission’s scientific observation plan, as well as the content and usage of the data. NASA stated that these materials have already provided valuable input for the scientific planning of Artemis III and future missions.
During the lunar flyby, the four astronauts took turns observing the Moon through Orion’s windows, taking photographs and dictating scientific notes, with a total focused observation time of approximately seven hours. By comparing human on-site observations with remote sensing data collected by orbiters, scientists can further study the Moon’s surface color, texture, geological structures, and impact events, while gathering valuable data for future crewed lunar missions.
NASA noted that this release consists of scientific observation archives curated by the lunar science team and does not include all spacecraft telemetry and operational data generated during the mission. According to the data user guide, a small number of images captured by crew members using iPhones are still being processed and have not yet been incorporated into the archive. The public can access this data through NASA’s Planetary Data System to view mission imagery, audio recordings, and related scientific reports.