金星大气化学异常及其他无法解释的云层特性的天体生物学潜力。

IF 3.5 3区物理与天体物理 Q2 ASTRONOMY & ASTROPHYSICS

Astrobiology Pub Date : 2024-04-01 Epub Date: 2024-03-07 DOI:10.1089/ast.2022.0060

Janusz J Petkowski, Sara Seager, David H Grinspoon, William Bains, Sukrit Ranjan, Paul B Rimmer, Weston P Buchanan, Rachana Agrawal, Rakesh Mogul, Christopher E Carr

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引用次数: 0

摘要

长期以来无法解释的金星大气观测结果和化学异常现象表明金星存在未知化学，但也为生命存在的可能性留下了空间。无法解释的观测结果包括几种超出热力学平衡的气体（如几十 ppm 的 O2、可能存在的 PH3 和 NH3、SO2 和 H2O 垂直丰度剖面）、成分不明的大型低层云粒子以及 "未知吸收体"。在这里，我们首先回顾了金星大气的相关特性，然后描述了大气中的化学异常现象，以及这些异常现象对未来金星天体生物学任务的激励作用。

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

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 venusian atmosphere and then describe the atmospheric chemical anomalies and how they motivate future astrobiology missions to Venus.

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来源期刊

Astrobiology 生物-地球科学综合

CiteScore

7.70

自引率

11.90%

发文量

100

审稿时长

3 months

期刊介绍： Astrobiology is the most-cited peer-reviewed journal dedicated to the understanding of life''s origin, evolution, and distribution in the universe, with a focus on new findings and discoveries from interplanetary exploration and laboratory research. Astrobiology coverage includes: Astrophysics; Astropaleontology; Astroplanets; Bioastronomy; Cosmochemistry; Ecogenomics; Exobiology; Extremophiles; Geomicrobiology; Gravitational biology; Life detection technology; Meteoritics; Planetary geoscience; Planetary protection; Prebiotic chemistry; Space exploration technology; Terraforming