NASA has released approximately 800 gigabytes of scientific data generated by the Artemis II mission. This archive documents the astronauts’ return to the far side of the moon and includes 11,000 full-resolution images and videos, 8.5 hours of spoken observations, notes taken by the astronauts, transcripts, and photographs from the cameras aboard the Orion capsule. The space agency states that this effort represents the first set of planetary science data obtained outside Earth and primarily by humans in over fifty years, with the closest comparable precedent dating back to the Apollo era and its lunar missions.
In addition to the public database, NASA has released three reports summarizing findings from the first crewed spacecraft mission to approach the moon in five decades. These reports are the Artemis II Preliminary Lunar Science Report, the Artemis II Lunar Science Operations Report, and the Artemis II Lunar Science Data User Guide.
The near terabyte of data is accessible to the public, although it is primarily intended for the scientific community. While the astronauts captured and collected the data during the mission, researchers on Earth will analyze it to produce new findings about the moon. The information may be particularly useful for planetary geologists, flight engineers, heliophysicists, experts in telecommunications and remote sensing, as well as specialists in meteoroid impacts.
For space and astronomy enthusiasts, accessible materials include mission transcripts and lunar photographs annotated by the astronauts. NASA has centralized access through its Planetary Data System, the public repository for data from its planetary missions. Users can access Artemis II data and browse various collections, documents, and files related to the moon.
For a less technical exploration, NASA has established an Artemis II science page where users can download the three reports, view a selection of photographs, and access the mission’s audio library. Those wishing to work directly with the raw data can visit the Planetary Data System, where scientific files and their metadata are available for individual download and analysis.
Initial analyses of some Artemis II data have already produced several findings. One notable result is the detection of five small meteoroid impacts on the lunar surface during a 54-minute eclipse observed by the Orion crew. Recording these impacts will enhance estimates of how frequently fragments just a few centimeters in size strike the moon, which is crucial for assessing risks to future bases, vehicles, and astronauts.
The observations also documented variations in color, brightness, and texture among different lunar regions, allowing scientists to compare these with composition maps obtained from orbit. Additionally, photographs taken near the terminator—the boundary between lunar day and night—provide detailed insights into how terrain and visibility change when the sun is low on the horizon. These conditions are expected to be common near the south pole, where NASA plans to conduct upcoming Artemis missions. The data can help astronauts prepare for challenges related to navigation, lighting, and terrain recognition.