NASA Releases Data from Artemis II Moon Mission, Calls It 'Sights and Sounds of Science'

What did four astronauts see, notice, and document during NASA's Artemis II mission orbiting the Moon? NASA has now made their unique scientific record available, featuring photographs, spoken observations, drawings, and annotations. Lunar scientists asked the Artemis II crew to look for tiny flashes created by rocky fragments hitting the Moon.

Astonishingly, the crew reported seeing five faint pinpricks of light from 46,000 miles away, which were later confirmed by the science team. These observations occurred during a planned loss of communications while the crew was on the Moon's far side. Apollo astronauts had seen similar flashes, but the Artemis crew likely captured the faintest ever seen with the unaided eye.

By estimating the brightness of the flashes, scientists concluded that the incoming rocks were each no wider than a couple of inches and traveling at thousands of miles per hour. Despite their size, the impacts produced enough light upon hitting the lunar surface to be visible. The crew's observations during a nearly hour-long total solar eclipse presented ideal dark conditions for detecting such subtle bursts, as there was no atmosphere to slow or burn up incoming debris.

The crew reported seeing various hues of gray, black, brown, tan, white, green, and blue on the Moon's surface, offering clues to the rocks and minerals that constitute different lunar regions. This information will help scientists understand how often these small impacts occur, which is crucial for assessing long-term risks to future lunar habitats and infrastructure.

NASA has uploaded over 800 gigabytes of Artemis II lunar science data to the public archive, including more than 11,000 full-resolution images, 8.5 hours of audio recordings, and crew-annotated images. Additionally, NASA has released three reports related to the mission.