NASA-funded mission to investigate underground lava tubes beneath lunar surface
The Planetary Science Institute's GIMLI project has been selected by NASA to investigate whether a large subsurface cave lies beneath the Marius Hills pit on the Moon's surface. Such caverns could potentially provide natural shelter for future astronauts from radiation and extreme temperature fluctuations. The research will utilize equipment delivered by commercial lunar landers and rovers in partnership with the Norwegian Space Agency.
The GIMLI project represents a significant advancement in lunar exploration by bringing established geophysical research methods directly to the Moon's surface. The investigation will employ three complementary technologies—ground-penetrating radar, seismic sensors, and gravity measurement tools—working together to detect subsurface voids and characterize geological structures beneath the Marius Hills pit. This multi-method approach builds on orbital observations that have suggested the existence of caves and lava tubes formed by the Moon's ancient volcanic activity.
The mission carries implications beyond cave detection. Even if no subsurface cavity is discovered, the collected data could illuminate how the pit itself formed and provide broader insights into the region's geological composition and volcanic history. The project demonstrates how commercial lunar delivery services enable scientific investigations that were previously limited to human astronaut missions.
This mission could influence long-term lunar settlement planning by identifying potential natural habitats that would shield future astronauts from radiation exposure and extreme temperature variations. The successful deployment of geophysical instruments on the lunar surface may also establish methodological precedents for subsurface investigations on other celestial bodies. For the space industry, the project demonstrates how government-funded science can drive demand for commercial lunar services, potentially accelerating private space transportation capabilities and reducing costs for future exploration initiatives.