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Fundamental science and engineering questions in planetary cave exploration

May 27, 2022

Nearly half a century ago, two papers postulated the likelihood of lunar lava tube caves using mathematical models. Today, armed with an array of orbiting and fly-by satellites and survey instrumentation, we have now acquired cave data across our solar system—including the identification of potential cave entrances on the Moon, Mars, and at least six other planetary bodies. These discoveries gave rise to the study of planetary caves. To help advance this field, we leveraged the expertise of an interdisciplinary group to identify a strategy to explore caves beyond Earth. Focusing primarily on astrobiology, the cave environment, geology, robotics, instrumentation, and human exploration, our goal was to produce a framework to guide this subdiscipline through at least the next decade. To do this, we first assembled a list of 198 science and engineering questions. Then, through a series of social surveys, 114 scientists and engineers winnowed down the list to the top 53 highest priority questions. This exercise resulted in identifying emerging and crucial research areas that require robust development to ultimately support a robotic mission to a planetary cave—principally the Moon and/or Mars. With the necessary financial investment and institutional support, the research and technological development required to achieve these necessary advancements over the next decade are attainable. Subsequently, we will be positioned to robotically examine lunar caves and search for evidence of life within martian caves; in turn, this will set the stage for human exploration and potential habitation of both the lunar and martian subsurface.

Publication Year 2022
Title Fundamental science and engineering questions in planetary cave exploration
DOI 10.1029/2022JE007194
Authors J. Judson Wynne, Timothy N. Titus, Ali-akbar Agha-Mohammadi, Armando Azua-Bustos, Penelope J. Boston, Pablo de León, Cansu Demirel-Floyd, Jo de Waele, Heather Jones, Michael J. Malaska, Ana Z. Miller, Haley M. Sapers, Francesco Sauro, Derek L. Sonderegger, Kyle Uckert, Uland Y. Wong, E. Calvin Alexander, Leroy Chiao, Glen E. Cushing, John DeDecker, Alberto G. Fairén, Amos Frumkin, Gary L. Harris, Michelle L. Kearney, Laura A. Kerber, Richard J. Léveillé, Kavya Manyapu, Matteo Massironi, John E. Mylroie, Bogdan P. Onac, Scott E. Parazynski, Charity M. Phillips-Lander, T. H. Prettyman, Dirk Schulze-Makuch, Robert V. Wagner, William L. Whittaker, Kaj E. Williams
Publication Type Article
Publication Subtype Journal Article
Series Title JGR Planets
Index ID 70231769
Record Source USGS Publications Warehouse
USGS Organization Astrogeology Science Center