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Session Proposal: Redox Frontiers: Energy Pathways for Life Across Planetary Systems (AGU25)

P034
Redox Frontiers: Energy Pathways for Life Across Planetary Systems

Session ID#: 248744

Session Description:
Redox processes serve as the fundamental energetic basis connecting non-living geological systems with living biological ones on Earth and potentially throughout the cosmos. This session explores how electron transfer processes mediate energy flows on Earth and across planetary bodies providing crucial framework for understanding habitability. We invite contributions examining redox dynamics in early Earth and Mars environments, ocean worlds such as Europa and Enceladus, and exoplanetary contexts. Topics include how interactions between atmosphere, hydrosphere, and lithosphere create redox gradients that could support biological activity; metabolic adaptations to varying redox environments; redox stratification in the geologic record; and methods for identifying habitable redox conditions on distant worlds. By bringing together the Earth and planetary science communities, we aim to develop a unified understanding of how redox chemistry shapes habitability in the solar system and provides essential context for the search for life in the universe.
Co-Sponsor(s):
  • B - Biogeosciences
  • EP - Earth and Planetary Surface Processes
  • PP - Paleoceanography and Paleoclimatology
Index Terms:

0456 Life in extreme environments [BIOGEOSCIENCES]
0471 Oxidation/reduction reactions [BIOGEOSCIENCES]
5220 Hydrothermal systems and weathering on other planets [PLANETARY SCIENCES: ASTROBIOLOGY]
5225 Early environment of Earth [PLANETARY SCIENCES: ASTROBIOLOGY]
Primary Convener:  Dr. Adomas Valantinas, Brown University, Department of Earth, Environmental and Planetary Sciences, Providence, United States
Conveners:  Patrick James Gasda, Los Alamos National Laboratory, Los Alamos, United States and Samuel M Howell, NASA Jet Propulsion Laboratory, Pasadena, United States
 
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How Mineralogy Makes More-Oxidising or -Reducing Planetary Mantles (Invited) (1894509)
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Roy E Price1, Vanessa Alfonso2,3, Vaughn Hamill4, Laura M Barge5, Timothy D Glotch6, Ryan S Jakubek7, Douglas LaRowe8, Andrew C. Schuerger9, Michael Thorpe10 and Amy J Williams4, (1)Stony Brook University, School of Marine and Atmospheric Sciences, Stony Brook, NY, United States, (2)CUNY Brooklyn College, Earth and Environmental Sciences, Brooklyn, NY, United States, (3)Stony Brook University, Department of Geosciences, Stony Brook, United States, (4)University of Florida, Department of Geological Sciences, Gainesville, FL, United States, (5)NASA Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, United States, (6)Stony Brook University, Department of Geosciences, Stony Brook, NY, United States, (7)Jacobs Technology, NASA Johnson Space Center, Houston, United States, (8)Southern Methodist University, Department of Earth Sciences, Dallas, United States, (9)University of Florida, Department of Plant Pathology, Gainesville, FL, United States, (10)NASA Goddard Space Flight Center, Greenbelt , MD, United States
 
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See more of: Planetary Sciences