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The origin of methane and biomolecules from a CO2 cycle on terrestrial planets
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SYSNO ASEP 0478910 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title The origin of methane and biomolecules from a CO2 cycle on terrestrial planets Author(s) Civiš, Svatopluk (UFCH-W) RID, ORCID, SAI
Knížek, Antonín (UFCH-W) ORCID, RID, SAI
Ivanek, Ondřej (UFCH-W)
Kubelík, Petr (UFCH-W) RID, ORCID
Zukalová, Markéta (UFCH-W) RID, SAI, ORCID
Kavan, Ladislav (UFCH-W) RID, ORCID
Ferus, Martin (UFCH-W) ORCID, RIDSource Title Nature Astronomy. - : Nature Publishing Group - ISSN 2397-3366
Roč. 1, č. 10 (2017), s. 721-726Number of pages 6 s. Language eng - English Country US - United States Keywords biomolecules ; CO2 cycle on terrestrial planets ; Mars Subject RIV CF - Physical ; Theoretical Chemistry OECD category Physical chemistry R&D Projects GA17-05076S GA ČR - Czech Science Foundation (CSF) GA13-07724S GA ČR - Czech Science Foundation (CSF) Method of publishing Limited access Institutional support UFCH-W - RVO:61388955 UT WOS 000415270100010 EID SCOPUS 85037145417 DOI 10.1038/s41550-017-0260-8 Annotation Understanding the chemical evolution of newly formed terrestrial planets involves uncertainties in atmospheric chemical composition and assessing the plausibility of biomolecule synthesis. In this study, an original scenario for the origin of methane on Mars and terrestrial planets is suggested. Carbon dioxide in Martian and other planetary atmospheres can be abiotically converted into a mixture of methane and carbon monoxide by ‘methanogenesis’ on porous mineral photoactive surfaces under soft ultraviolet irradiation. On young planets exposed to heavy bombardment by interplanetary matter, this process can be followed by biomolecule synthesis through the reprocessing of reactive reducing atmospheres by impact-induced shock waves. The proposed mechanism of methanogenesis may help to answer the question concerning the formation of methane and carbon monoxide by photochemical processes, the formation of biomolecules on early Earth and other terrestrial planets, and the source and seasonal variation of methane concentrations on Mars. Workplace J. Heyrovsky Institute of Physical Chemistry Contact Michaela Knapová, michaela.knapova@jh-inst.cas.cz, Tel.: 266 053 196 Year of Publishing 2018 Electronic address http://hdl.handle.net/11104/0274956
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