Evolution of the Geological Environment and Exploration for Life on Mars  

作　　者：Long Xiao 

机构地区：[1]School of Earth Sciences,China University of Geosciences,Wuhan 430074,China

出　　处：《Journal of Earth Science》2023年第5期1626-1628,共3页地球科学学刊（英文版）

摘　　要：Nowadays,Mars is a cold desert planet with a nearly vanishing magnetic field,a lack of volcanoes,thin and oxygendepleted atmosphere,and severe solar and cosmic radiation,which is not suitable for the survival and reproduction of life.Nevertheless,Mars is the most similar planetary body to Earth in the solar system:volcanoes(Xiao et al.,2023a;Wilson,2009;Greeley and Spudis,1981),widespread dry vallies and other fluvial landforms(Shi et al.,2022a,b;Zhao et al.,2021;Carr,2006),numerous paleolakes(Michalski et al.,2022;Zhao et al.,2020;Zhao and Xiao,2016);paleo-ocean remnants(Xiao et al.,2023b;Carr and Head,2003;Baker et al.,1991),large-area magnetic anomalies and local residual magnetic fields(Connerney et al.,2005;Stevenson,2001)all indicate that Mars once had intense volcanic activities,thick atmosphere,and an Earth-like warm and humid climate,potentially possessing a habitable environment for carbon-based life.Over the past billion years,Mars has undergone tremendous changes in the type and intensity of its geological activities and its external environments,making it possible for Mars to serve as a model for Earth's future.

关 键 词：EARTH VOLCANIC FLUVIAL 

分 类 号：P185.3[天文地球—天文学]