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Chemistry, Life, and the Search for Aliens

机译:化学,生命与外星人搜寻

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摘要

While "life" may universally be a self-sustaining chemical system capable of Darwinian evolution, alien life may be quite different in its chemistry from the terran life that we know here on Earth. In this case, it will be difficult to recognize, especially if it has not advanced beyond the single cell life forms that have dominated much of the terran biosphere. This review summarizes what we might infer from general physical and chemical law about how such "weird" life might be structured, what solvents other than water it might inhabit, what genetic molecules it might contain, and what metabolism it might exploit.
机译:尽管“生命”可能普遍是能够进行达尔文进化的自我维持的化学系统,但外星生命的化学性质可能与我们在地球上所知的地球生命完全不同。在这种情况下,将很难识别,特别是如果它还没有超越支配整个德兰生物圈的单细胞生命形式。这篇综述总结了我们可以从一般的物理和化学定律中推断出有关这种“怪异”生活的结构,除水以外可能居住的溶剂,其可能包含的遗传分子以及可能利用的新陈代谢的推断。

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