Caves on the moon are target of new NASA mission

NASA wants to search for caves on the moon. A new mission named GIMLI will land and examine a volcanic pit, the Marius Hills Pit, in the vast, dark lunar lava plain known as Oceanus Procellarum. The science-journalism coverage adds useful context, while the strongest evidential footing still comes from the underlying data, papers or institutional documentation.

That matters because Earth science becomes stronger when local observations can be placed inside a broader physical pattern that spans time and geography. The planet operates as a coupled system in which atmospheric, oceanic, cryospheric and solid-Earth processes interact across timescales from days to millions of years. A measurement that captures one variable at one location and one moment has limited interpretive value until it is embedded in the longer series and wider spatial coverage that allow natural variability to be separated from forced change. The plan is to land the mission at the volcanic Marius Hills Pit in Oceanus Procellarum (“Ocean of Storms”), a vast, dark lava plain or lunar mare (“sea”) located on the western. NASA announced it had selected the new mission on September 30, 2026.

The mission was selected as part of the Payloads and Research Investigations on the Surface of the Moon (PRISM) program. Hall opening out of hall, dome after dome, stair beyond stair. '" Fingers crossed we don't find any orcs on the Moon! buff. ly/wT9bQNP, Planetary Science Institute (@psi.

But the science will come first, according to Nicky Fox, associate administrator of NASA’s Science Mission Directorate. NASA Science is building the ultimate interplanetary survival guide to ensure that science goes first to the lunar surface to provide our future astronaut crews with the vital.

And for scientists the planned GIMLI mission is an unprecedented opportunity to study a lava tube somewhere other than Earth. Found nearly 300 pits like Marius Hills Pit on the moon so far.

The broader interest lies in linking the observation to climatic, geophysical or environmental dynamics that extend well beyond the immediate event or location. Earth science is unusual in that its most important questions operate on timescales that no single research career can observe directly, making the archival record, whether in ice, sediment, rock or satellite data, as important as any new measurement. Results that can be embedded in that record, and that either confirm or challenge the patterns it reveals, carry disproportionate scientific weight.

NASA’s Lunar Reconnaissance Orbiter used radar to investigate one of those pits, in Mare Tranquillitatis, in 2024. Radar data from the Kaguya orbiter plus gravity measurements from NASA’s GRAIL mission pointed strongly to a void beneath the surface.

Because this item comes through EarthSky as science journalism, it should be treated as contextual reporting rather than primary evidence. Good science reporting can identify why a result matters, connect it to the wider literature and make technical work readable, but the decisive evidence remains in the original paper, dataset, mission release or technical record. That distinction is especially important when a story is later repeated by aggregators, because repetition increases visibility, not evidential strength.

The next step is to place the result inside longer time series and to compare it with independent instruments and independent sites. Earth system observations gain most of their interpretive power from network density and temporal depth, not from any single measurement however precise. Model simulations that assimilate the new data will help clarify whether the observation fits comfortably within known natural variability or represents a shift that existing models do not reproduce.

Source