Artemis II Flyby: Impact Flashes and New Clues That Will Shape a Future Moon Base

Less than two weeks after the Artemis II mission, NASA Administrator Jared Isaacman said that the crew's observations during their lunar flyby are already providing practical, actionable information for designing a permanent base on the Moon.

Artemis II launched on April 1 with astronauts Reid Wiseman, Christina Koch and Victor Glover of NASA and Canadian astronaut Jeremy Hansen on a 10‑day voyage around Earth and the Moon. The crew made their closest approach on April 6, spending about seven hours photographing and studying the lunar surface and becoming the first humans to view the Moon's entire far side with their own eyes.

Impact Flashes Offer Real Data

Near the end of the lunar pass, while the crew observed a solar eclipse, they reported seeing multiple bright flashes on the surface. Mission Control at the Johnson Space Center erupted in cheers when those flashes—caused by rocky debris striking the Moon—were confirmed by the crew's imagery and eyewitness reports. Isaacman said the observation could lead scientists to update models of how frequently the lunar surface is struck and help engineers design structures, such as protective roofing, for a surface base.

Everybody got excited because there was a question of whether or not they'd be able to see it. It means we can update our models of how often the Moon is taking a beating, and that might inform roof design when we build a Moon base — Jared Isaacman

Program Changes and Timelines

Last month NASA announced it will cancel plans for a lunar orbital station and instead repurpose those components to construct a roughly $20 billion base on the surface. That decision follows a broader restructuring of the Artemis program announced in February, aimed at accelerating launch cadence with a target of landing astronauts on the Moon by 2028.

Lester Holt with NASA Administrator Jared Isaacman and former NASA astronaut Sunita Williams in Washington on Thursday. (Caroline Gutman for NBC News)(Caroline Gutman for NBC News)

The revised schedule adds an intermediate test mission, Artemis III, planned for mid‑2027 to demonstrate rendezvous and docking in low‑Earth orbit with one or both commercial lunar landers being developed by SpaceX and Blue Origin. If Artemis III succeeds, NASA intends to fly Artemis IV in 2028 with a commercially built lander docking to Orion and ferrying astronauts to the surface.

If something doesn't work the way we expect, we'd rather be hours away from returning to the water and not days. What we learn from Artemis III will roll into Artemis IV in 2028 — Jared Isaacman

Lessons From Low Earth Orbit

Former NASA astronaut Sunita Williams, who retired in December 2025, emphasized that the International Space Station remains a vital proving ground for long‑duration human spaceflight. Decades of ISS operations have informed how exercise, nutrition, engineering, manufacturing and biomedical research can support humans living off Earth.

Williams logged 608 total days in space across three long ISS stays and noted that those experiences directly inform habitat systems, life support, medical protocols and other technologies likely to be used on the Moon. When asked whether they would volunteer for a lunar posting, both Williams and Isaacman answered enthusiastically in the affirmative.

This article was originally published on NBCNews.com.