During the Artemis II mission in April, the crew observed five meteoroid impacts on the lunar surface. The events occurred on April 6 while the Orion spacecraft was on the far side of the Moon, approximately 74,000 km away. The flashes were visible for 54 minutes while the Sun was obscured by the Moon, allowing the crew to spot objects estimated to be under 5 cm in diameter.
The crew, including Reid Wiseman, Victor Glover, and Jeremy Hansen, documented the flashes, which are considered some of the weakest ever seen by the human eye. These observations highlight the risks posed by high-speed impacts to future lunar infrastructure, such as habitats and solar panels, as the Moon lacks a dense atmosphere to slow down incoming debris.
In addition to impact data, the mission report details observations of lunar surface colors, including gray, brown, green, and blue, which may indicate varying mineral compositions like titanium or iron. The crew also studied the terminator line to better understand the topography of the lunar south pole, a key region for future landing missions.
NASA has released 800 GB of mission data, comprising over 11,000 high-resolution images and videos, 8.5 hours of audio recordings, and technical documentation. This archive also features unique imagery of Earth, capturing entire weather systems and polar auroras, which provides a broader perspective than standard satellite remote sensing data.
The current report remains preliminary, with ongoing efforts to correlate crew observations with instrumental data from the Lunar Reconnaissance Orbiter. These findings are essential for planning long-term human presence on the lunar surface, as NASA prepares for subsequent stages of the Artemis program.
