Exobiology and Planetary Protection of icy moons
Exobiology and Planetary Protection of icy moons
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冰卫星的外太空生物学和行星保护
DOI：
10.1007/s11214-009-9610-x
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发表时间：
2010
影响因子：
10.3
通讯作者：
M. Viso
中科院分区：
文献类型：
--
作者：
F. Raulin;K. Hand;C. Mckay;M. Viso
外太阳系是研究宇宙生命的外太空生物学的一个重要研究领域。外行星的几个卫星涉及的过程和结构与那些被认为在地球上生命的出现中发挥了重要作用的过程和结构相当，例如不同水库之间有机物质的形成和交换。研究太阳系外卫星上和卫星内的这些生命前过程是外太空生物学的一个关键目标，与可居住性问题和寻找过去甚至现在生命的证据一起。本章根据从空间飞行任务以及理论和实验室模型获得的最新数据，回顾了木卫二、土卫二和土卫六上的前生物化学和潜在生命存在的各个方面。这些地外环境，这是可能包括大型水库的液态水在其内部结构的可居住性，讨论以及土卫六的碳氢化合物湖的特殊情况。还提出了行星保护问题，特别是在欧罗巴的情况下。
The outer solar system is an important area of investigation for exobiology, the study of life in the universe. Several moons of the outer planets involve processes and structures comparable to those thought to have played an important role in the emergence of life on Earth, such as the formation and exchange of organic materials between different reservoirs. The study of these prebiotic processes on, and in, outer solar system moons is a key goal for exobiology, together with the question of habitability and the search for evidence of past or even present life. This chapter reviews the aspects of prebiotic chemistry and potential presence of life on Europa, Enceladus and Titan, based on the most recent data obtained from space missions as well as theoretical and experimental laboratory models. The habitability of these extraterrestrial environments, which are likely to include large reservoirs of liquid water in their internal structure, is discussed as well as the particular case of Titan’s hydrocarbon lakes. The question of planetary protection, especially in the case of Europa, is also presented.