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The origin of methane and biomolecules from a CO.sub.2./sub. cycle on terrestrial planets
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SYSNO ASEP 0488421 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, S. (CZ)
Knížek, A. (CZ)
Ivanek, O. (CZ)
Kubelík, Petr (FZU-D) RID, ORCID
Zukalova, M. (CZ)
Kavan, L. (CZ)
Ferus, M. (CZ)Number of authors 7 Source 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 high-energy chemistry ; nucleobase formation ; martian atmosphere ; carbon-dioxide ; early earth ; Mars ; formamide ; surfaces ; exchange ; TiO2 Subject RIV BL - Plasma and Gas Discharge Physics OECD category Fluids and plasma physics (including surface physics) R&D Projects LG15013 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) Institutional support FZU-D - RVO:68378271 UT WOS 000415270100010 EID SCOPUS 85037145417 DOI https://doi.org/10.1038/s41550-017-0260-8 Annotation 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 Institute of Physics Contact Kristina Potocká, potocka@fzu.cz, Tel.: 220 318 579 Year of Publishing 2018
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