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Experimental evidence for the potential impact ejection of viable microorganisms from Mars and Mars-like planets |
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| Authors: | Dieter Stöffler Gerda Horneck Sieglinde Ott Ulrich Hornemann Charles S Cockell Ralf Moeller Cornelia Meyer Jean-Pierre de Vera Jörg Fritz Natalia A Artemieva |
| Institution: | a Museum für Naturkunde, Sektion Mineralogie, Humboldt-Universität zu Berlin, D 10099 Berlin, Germany b German Aerospace Center, Institute of Aerospace Medicine, D 51170 Köln, Germany c Institut für Botanik, Heinrich-Heine-Universität, D 40225 Düsseldorf, Germany d Ernst-Mach-Institut für Kurzzeitdynamik, Fraunhofer-Gesellschaft, D 79104 Freiburg, Germany e Open University, Milton Keynes, MK7 6AA, UK f Deutsche Sammlung von Mikroorganismen und Zellkulturen GmbH, D 38124 Braunschweig, Germany g Institute for Dynamics of Geospheres, Russian Academy of Science, Moscow 119334, Russia |
| Abstract: | Bacterial spores (Bacillus subtilis), cyanobacteria (Chroococcidiopsis sp.), and lichen (Xanthoria elegans) embedded in martian analogue rock (gabbro) were exposed to shock pressures between 5 and 50 GPa which is the range of pressures observed in martian meteorites. The survival of Bacillus subtilis and Xanthoria elegans up to 45 GPa and of Chroococcidiopsis sp. up to 10 GPa supports the possibility of transfer of life inside meteoroids between Mars and Earth and it implies the potential for the transfer of life from any Mars-like planet to other habitable planets in the same stellar system. |
| Keywords: | Mars Impact processes Astrobiology Meteorites Experimental techniques |
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