Aguzzi, Jacopo, Cuadros, Javier, Dartnell, Lewis, Costa, Corrado, Violino, Simona, Canfora, Loredana, Danovaro, Roberto, Robinson, Nathan Jack, Giovannelli, Donato, Flögel, Sascha, Stefanni, Sergio, Chatzievangelou, Damianos, Marini, Simone, Picardi, Giacomo and Foing, Bernard (2024) Marine Science Can Contribute to the Search for Extra-Terrestrial Life. Life, 14 (6). Art.Nr. 676. DOI 10.3390/life14060676.

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Abstract

Life on our planet likely evolved in the ocean, and thus exo-oceans are key habitats to search for extraterrestrial life. We conducted a data-driven bibliographic survey on the astrobiology literature to identify emerging research trends with marine science for future synergies in the exploration for extraterrestrial life in exo-oceans. Based on search queries, we identified 2592 published items since 1963. The current literature falls into three major groups of terms focusing on (1) the search for life on Mars, (2) astrobiology within our Solar System with reference to icy moons and their exo-oceans, and (3) astronomical and biological parameters for planetary habitability. We also identified that the most prominent research keywords form three key-groups focusing on (1) using terrestrial environments as proxies for Martian environments, centred on extremophiles and biosignatures, (2) habitable zones outside of “Goldilocks” orbital ranges, centred on ice planets, and (3) the atmosphere, magnetic field, and geology in relation to planets’ habitable conditions, centred on water-based oceans.

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