Astrobiological Potential of Venus Atmosphere Chemical Anomalies and Other Unexplained Cloud Properties

Autor:	Petkowski, Janusz J., Seager, Sara, Grinspoon, David H., Bains, William, Ranjan, Sukrit, Rimmer, Paul B., Buchanan, Weston P., Agrawal, Rachana, Mogul, Rakesh, Carr, Christopher E.
Rok vydání:	2024
Předmět:	Astrophysics - Earth and Planetary Astrophysics
Druh dokumentu:	Working Paper
DOI:	10.1089/ast.2022.0060
Popis:	Long-standing unexplained Venus atmosphere observations and chemical anomalies point to unknown chemistry but also leave room for the possibility of life. The unexplained observations include several gases out of thermodynamic equilibrium (e.g. tens of ppm O2, the possible presence of PH3 and NH3, SO2 and H2O vertical abundance profiles), an unknown composition of large, lower cloud particles, and the "unknown absorber(s)". Here we first review relevant properties of the Venus atmosphere and then describe the atmospheric chemical anomalies and how they motivate future astrobiology missions to Venus. Comment: Published in Astrobiology (in press); Partially based on the text of the Venus Life Finder Mission Study report (arXiv:2112.05153)
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/2401.04708 Zobrazit plný text záznamu View this record from Arxiv