PDF(Pubmed)
Abstract：
Life on our planet likely evolved in the ocean, and thus exo-oceans are key habitats to search for extraterrestrial life. We conducted a data-driven bibliographic survey on the astrobiology literature to identify emerging research trends with marine science for future synergies in the exploration for extraterrestrial life in exo-oceans. Based on search queries, we identified 2592 published items since 1963. The current literature falls into three major groups of terms focusing on (1) the search for life on Mars, (2) astrobiology within our Solar System with reference to icy moons and their exo-oceans, and (3) astronomical and biological parameters for planetary habitability. We also identified that the most prominent research keywords form three key-groups focusing on (1) using terrestrial environments as proxies for Martian environments, centred on extremophiles and biosignatures, (2) habitable zones outside of \"Goldilocks\" orbital ranges, centred on ice planets, and (3) the atmosphere, magnetic field, and geology in relation to planets\' habitable conditions, centred on water-based oceans.
摘要：
地球上的生命很可能在海洋中进化,因此，外海洋是寻找外星生命的关键栖息地。我们对天体生物学文献进行了数据驱动的书目调查，以确定与海洋科学的新兴研究趋势，以便在未来的海洋外星生命探索中发挥协同作用。基于搜索查询，自1963年以来，我们确定了2592个已出版的项目。当前的文献分为三大类，重点是（1）在火星上寻找生命，（2）我们太阳系内的天体生物学，参考冰冷的卫星及其外海洋，（3）行星可居住性的天文和生物学参数。我们还发现，最突出的研究关键词构成了三个关键群体，重点是(1)使用陆地环境作为火星环境的代理，以极端微生物和生物特征为中心，(2)“金发姑娘”轨道范围之外的可居住区，以冰行星为中心，（3）大气，磁场,和与行星宜居条件相关的地质，以水基海洋为中心。
