An international team of scientists, utilizing data from NASA’s Lunar Reconnaissance Orbiter (LRO), has made a groundbreaking discovery: evidence of caves beneath the Moon’s surface. The findings, derived from re-analyzed radar data captured by LRO’s Miniature Radio-Frequency (Mini-RF) instrument in 2010, reveal a cave extending over 200 feet from the base of a lunar pit. This significant discovery is situated 230 miles northeast of the Apollo 11 landing site in Mare Tranquillitatis.
Scientists have long suspected the existence of subsurface lunar caves akin to those found on Earth. Early indications came from lunar orbiter images preceding the Apollo missions, with concrete evidence emerging in 2009 when Japan Aerospace Exploration Agency’s (JAXA) Kaguya orbiter confirmed the presence of lunar pits. Since then, numerous pits have been identified across the Moon through advanced imaging and thermal measurements conducted by LRO.
Dr. Noah Petro, LRO project scientist at NASA’s Goddard Space Flight Center, highlighted the significance of the Mini-RF radar data, emphasizing its role in elucidating the potential extent of these lunar caves. These underground structures are believed to have formed similarly to lava tubes on Earth, where molten lava once flowed beneath the lunar surface, leaving behind hollow tunnels. The collapse of a lava tube’s ceiling results in a pit or skylight, potentially leading into extensive cave networks.
Operated by Johns Hopkins Applied Physics Laboratory and managed by NASA Goddard Space Flight Center, LRO has been instrumental in amassing a wealth of lunar data since its launch in 2009. This latest discovery not only expands our understanding of lunar geology but also raises intriguing possibilities for future lunar exploration. With NASA’s renewed focus on lunar missions in collaboration with international and commercial partners, these caves could serve as crucial shelters for astronauts, revealing key insights into the Moon’s geological history.
The discovery underscores LRO’s pivotal role in advancing lunar science, paving the way for future missions aimed at expanding human presence beyond Earth. As NASA continues to harness the potential of lunar exploration, these findings promise to unlock new knowledge and opportunities in our exploration of the cosmos.