Preservation and detection of biosignatures from deep-sea, deep-space and deep-time; Formation and evolution of extraterrestrial oceans; Potential physical, chemical, and biological processes in extraterrestrial oceans; Prebiotic and abiotic carbon cycling compared with biosignatures; In-situ and real-time analyses in deep-sea and deep-space environments; Exploration for extraterrestrial life and habitable environments for humans.  

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