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Extraterrestrial Life in the Thermosphere: Plasmas, UAP, Pre-Life, Fourth State of Matter
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作者 R. Joseph C. Impey +8 位作者 O. Planchon R. del Gaudio M. Abu Safa A. R. Sumanarathna E. Ansbro D. Duvall G. Bianciardi C. H. Gibson R. Schild 《Journal of Modern Physics》 2024年第3期322-376,共55页
“Plasmas” up to a kilometer in size and behaving similarly to multicellular organisms have been filmed on 10 separate NASA space shuttle missions, over 200 miles above Earth within the thermosphere. These self-illum... “Plasmas” up to a kilometer in size and behaving similarly to multicellular organisms have been filmed on 10 separate NASA space shuttle missions, over 200 miles above Earth within the thermosphere. These self-illuminated “plasmas” are attracted to and may “feed on” electromagnetic radiation. They have different morphologies: 1) cone, 2) cloud, 3) donut, 4) spherical-cylindrical;and have been filmed flying towards and descending from the thermosphere into thunderstorms;congregating by the hundreds and interacting with satellites generating electromagnetic activity;approaching the Space Shuttles. Computerized analysis of flight path trajectories documents these plasmas travel at different velocities from different directions and change their angle of trajectory making 45°, 90°, and 180° shifts and follow each other. They’ve been filmed accelerating, slowing down, stopping, congregating, engaging in “hunter-predatory” behavior and intersecting plasmas leaving a plasma dust trail in their wake. Similar life-like behaviors have been demonstrated by plasmas created experimentally. “Plasmas” may have been photographed in the 1940s by WWII pilots (identified as “Foo fighters”);repeatedly observed and filmed by astronauts and military pilots and classified as Unidentified Aerial—Anomalous Phenomenon. Plasmas are not biological but may represent a form of pre-life that via the incorporation of elements common in space, could result in the synthesis of RNA. Plasmas constitute a fourth state of matter, are attracted to electromagnetic activity, and when observed in the lower atmosphere likely account for many of the UFO-UAP sightings over the centuries. 展开更多
关键词 Extraterrestrials PLASMAS Dusty Plasmas EXTREMOPHILES life in Space Abiogenesis origins of life RNA World
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Nuclear geyser model of the origin of life:Driving force to promote the synthesis of building blocks of life 被引量:2
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作者 Toshikazu Ebisuzaki Shigenori Maruyama 《Geoscience Frontiers》 SCIE CAS CSCD 2017年第2期275-298,共24页
We propose the nuclear geyser model to elucidate an optimal site to bear the first life.Our model overcomes the difficulties that previously proposed models have encountered.Nuclear geyser is a geyser driven by a natu... We propose the nuclear geyser model to elucidate an optimal site to bear the first life.Our model overcomes the difficulties that previously proposed models have encountered.Nuclear geyser is a geyser driven by a natural nuclear reactor,which was likely common in the Hadean Earth,because of a much higher abundance of 235U as nuclear fuel.The nuclear geyser supplies the following:(1)high-density ionizing radiation to promote chemical chain reactions that even tar can be used for intermediate material to restart chemical reactions,(2)a system to maintain the circulation of material and energy,which includes cyclic environmental conditions(warm/cool,dry/wet,etc.)to enable to produce complex organic compounds,(3)a lower temperature than 100℃ as not to break down macromolecular organic compounds,(4)a locally reductive environment depending on rock types exposed along the geyser wall,and(5)a container to confine and accumulate volatile chemicals.These five factors are the necessary conditions that the birth place of life must satisfy.Only the nuclear geyser can meet all five,in contrast to the previously proposed birth sites,such as tidal flat,submarine hydrothermal vent,and outer space.The nuclear reactor and associated geyser,which maintain the circulations of material and energy with its surrounding environment,are regarded as the nuclear geyser system that enables numerous kinds of chemical reactions to synthesize complex organic compounds,and where the most primitive metabolism could be generated. 展开更多
关键词 origin of life Chemical evolution Natural nuclear reactor Aqueous electron Radiation chemistry
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What Life Is and How It Originated
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作者 William Day 《Journal of Philosophy Study》 2013年第10期895-904,共10页
This paper refutes the mechanistic interpretation of cellular dynamics and contends that the life-giving principle is sustained growth a biological system and is uninterrupted growth balanced in a dynamic state by syn... This paper refutes the mechanistic interpretation of cellular dynamics and contends that the life-giving principle is sustained growth a biological system and is uninterrupted growth balanced in a dynamic state by synthesis and dissolution. The process began by an oxidation/reduction reaction on the surface of pyrite energized photovoltaically by sunlight. Hydrogen sulfide was oxidized, carbon dioxide was reduced, and phosphate on the surface of the pyrite was a reactant. The first organic compounds were sulfides and phosphoglycerates. These organophosphates were at the center of the energy cycle of all life where the dehydration of a relatively unreactive "low-energy" two-phosphoglycerate transforms it into the "high-energy" phosphoenolpyruvate. Life began as a growth process and continues to grow ceaselessly out of necessity. It cannot discontinue the life-giving energy flow without irreparable loss of the process. All forms of life past and present were and are stabilized systems in which the growth process is contained in metabolic turnover. 展开更多
关键词 origin of life life principle metabolic turnover
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Magnetic Isotope Theory of the Origin of Life on Earth
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作者 Aibassov Yerkin Nakisbekov Narymzhan +1 位作者 Yemelyanova Valentina Savizky Ruben 《Journal of Chemistry and Chemical Engineering》 2016年第6期301-304,共4页
The authors have proposed a new of magnetic isotope theory of life on Earth. According to this theory the initial impetus for the beginning of the synthesis of organic compounds is the impact of electromagnetic radiat... The authors have proposed a new of magnetic isotope theory of life on Earth. According to this theory the initial impetus for the beginning of the synthesis of organic compounds is the impact of electromagnetic radiation from the sun and energy radioactive isotopes. 展开更多
关键词 Theory of the origin of life on earth magnetic field radioactive isotope synthesis organic compounds.
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Nine requirements for the origin of Earth’s life:Not at the hydrothermal vent, but in a nuclear geyser system
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作者 Shigenori Maruyama Ken Kurokawa +3 位作者 Toshikazu Ebisuzaki Yusuke Sawaki Konomi Suda M. Santosh 《Geoscience Frontiers》 SCIE CAS CSCD 2019年第4期1337-1357,共21页
The origin of life on Earth remains enigmatic with diverse models and debates.Here we discuss essential requirements for the first emergence of life on our planet and propose the following nine requirements:(1)an ener... The origin of life on Earth remains enigmatic with diverse models and debates.Here we discuss essential requirements for the first emergence of life on our planet and propose the following nine requirements:(1)an energy source(ionizing radiation and thermal energy);(2)a supply of nutrients(P.K.REE.etc.);(3)a supply of life-constituting major elements;(4)a high concentration of reduced gases such as CH4,HCN and NH3;(5)dry-wet cycles to create membranes and polymerize RNA;(6)a non-toxic aqueous environment;(7)Na-poor water;(8)highly diversified environments,and(9)cyclic conditions,such as dayto-night,hot-to-cold etc.Based on these nine requirements,we evaluate previously proposed locations for the origin of Earth’s life,including:(1)Darwin’s"warm little pond",leading to a"prebiotic soup"for life;(2)panspermia or Neo-panspermia(succession model of panspermia);(3)transportation from/through Mars;(4)a deepsea hydrothermal system;(5)an on-land subduct ion-zone hot spring,and(6)a geyser systems driven by a natural nuclear reactor.We conclude that location(6)is the most ideal candidate for the o rigin point for Earth’s life because of its efficiency in continuously supplying both the energy and the necessary materials for life,thereby maintaining the essential"cradle"for its initial development.We also emphasize that falsifiable working hypothesis provides an important tool to evaluate one of the biggest mysteries of the universe-the origin of life. 展开更多
关键词 origin of Earth's life NUCLEAR geyser SYSTEM EMERGENCE and evolution of life Falsifiability
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Entropy Production and the Origin of Life
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作者 Karo Michaelian 《Journal of Modern Physics》 2011年第6期595-601,共7页
All irreversible processes arise and persist to produce entropy. Entropy production is not incidental to such processes, but rather the very reason for their origin and persistence. Here we take such a thermodynamic p... All irreversible processes arise and persist to produce entropy. Entropy production is not incidental to such processes, but rather the very reason for their origin and persistence. Here we take such a thermodynamic perspective on the origin of life, recognizing that entropy production is not only the vital force of life, but the fundamental link between life in the biosphere today and its origin in the Archean. Today the greatest en-tropy production in the biosphere is due to visible photon absorption and dissipation into heat by organic material in liquid water and the subsequent degradation of the established heat gradient through the water cycle. Following this link back in time to the Archean environment leads to a suggestion for a mechanism for the origin of life based on UV photon absorption and dissipation by RNA and DNA. 展开更多
关键词 origin of life ENTROPY Production RNA DNA NON-EQUILIBRIUM THERMODYNAMICS UVTAR
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Origin and Evolution of Life Constraints on the Solar Model
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作者 K Michaelian O Manuel 《Journal of Modern Physics》 2011年第6期587-594,共8页
Life arose as a non-equilibrium thermodynamic process to dissipate the photon potential generated by the hot Sun and cold outer space. Evidence from the geochemical record of the evolutionary history of life on Earth ... Life arose as a non-equilibrium thermodynamic process to dissipate the photon potential generated by the hot Sun and cold outer space. Evidence from the geochemical record of the evolutionary history of life on Earth suggests that life originated in a hot aqueous environment dissipating UV light and evolved later to dissipate visible light. This evidence places constraints on models of solar origin and evolution. The standard solar model seems less compatible with the data than does the pulsar centered solar model. 展开更多
关键词 Pulsar Centered SOLAR MODEL (PCS) Standard SOLAR MODEL origin of life Ultraviolet and Temperature Assisted REPLICATION (UVTAR) CONSTRAINTS on SOLAR MODEL
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明代三边总督喻时生平著述考
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作者 张盼盼 胡玉冰 《大庆师范学院学报》 2024年第1期104-112,共9页
喻时(1507—1571),明嘉靖十七年(1538)进士,历官嘉靖、隆庆两朝,前后三十余年间,曾任吴江县令、监察御史、山西巡抚、三边总督等职,官至兵部右侍郎。嘉靖后期,喻时临危受命,总督三边军务,功绩卓然,有力地维护了西北边地和平。其宦迹遍... 喻时(1507—1571),明嘉靖十七年(1538)进士,历官嘉靖、隆庆两朝,前后三十余年间,曾任吴江县令、监察御史、山西巡抚、三边总督等职,官至兵部右侍郎。嘉靖后期,喻时临危受命,总督三边军务,功绩卓然,有力地维护了西北边地和平。其宦迹遍及南北,政绩斐然,声名远播,时有“喻青天”之美誉。喻时一生勤于著述,今有《吴皋先生文集》《海上老人别集》及其它散著存世。 展开更多
关键词 喻时 明朝 嘉庆 隆庆 《吴皋先生文集》
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古之道术:黄老生命哲学的思想渊源
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作者 白延辉 《当代中国价值观研究》 2024年第3期81-89,共9页
黄老生命哲学的渊源可谓纷繁复杂,其最初源头要追溯到前诸子时期的三代文化,其中“敬德”思想的确立及其相关概念的演变,为中国传统哲学尤其是生命哲学的产生和发展奠定了基础。《老子》是黄老道家生命哲学的最直接源头,为黄老生命哲学... 黄老生命哲学的渊源可谓纷繁复杂,其最初源头要追溯到前诸子时期的三代文化,其中“敬德”思想的确立及其相关概念的演变,为中国传统哲学尤其是生命哲学的产生和发展奠定了基础。《老子》是黄老道家生命哲学的最直接源头,为黄老生命哲学的本原论、人性论、价值论的形成奠定了理论基础。在从老子哲学走向黄老之学的过程中,范蠡对道家哲学的创造性阐释至关重要,黄老生命哲学的阴阳气化论、“因人情”的人性论、刚柔相济的人生观等内容都离不开范蠡哲学的深远影响。黄帝神话传说中已经具备了比较朴素且明晰的生命哲学意识。 展开更多
关键词 黄老道家 生命哲学 思想渊源 老子 范蠡
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汉字“生”“活”“存”“在”本义的存在论意义--存在论的“汉语哲学”诠释
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作者 黄玉顺 《齐鲁学刊》 北大核心 2024年第5期5-14,共10页
汉语“本体论”与“存在论”应当严格地区别开来,前者对应传统的“ontology”,后者对应的则应当是“Being theory”,因为后者思考的并非形而上的存在者,而是前存在者的存在。尽管前者可以汉译为“存有论”,但后者却不能,因为汉语“有”... 汉语“本体论”与“存在论”应当严格地区别开来,前者对应传统的“ontology”,后者对应的则应当是“Being theory”,因为后者思考的并非形而上的存在者,而是前存在者的存在。尽管前者可以汉译为“存有论”,但后者却不能,因为汉语“有”的本义是一种存在者化的观念,在哲学上所指的正是作为形而上存在者的本体。所谓“汉语哲学”,其中心任务应当是揭示中国哲学关键词的存在论意义。汉字“生”“在”“存”的本义,即人与草木浑然不分的共在,都是中国远古先民对存在的感悟,从而具有存在论意义;而“活”的本义作为“水流声”,则表征着人是由于倾听“天命”而得以存在的,从而具有当代诠释学的意义。 展开更多
关键词 汉字的本义 生活 存在 本体论 存在论
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生命早期肠道菌群异常参与发育源性骨质疏松症发生的研究进展 被引量:1
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作者 马翅 何航元 +3 位作者 肖浩 李斌 汪晖 陈廖斌 《中华骨质疏松和骨矿盐疾病杂志》 CSCD 北大核心 2024年第1期75-80,共6页
骨质疏松症(osteoporosis,OP)的发生与生命早期骨发育密切相关,是一种发育起源疾病。本文总结了OP发育起源相关的文献报道,提出其发生机制可能与生命早期肠道菌群异常有关。同时,简要阐明了生命早期肠道菌群的组成特征及其影响因素,并... 骨质疏松症(osteoporosis,OP)的发生与生命早期骨发育密切相关,是一种发育起源疾病。本文总结了OP发育起源相关的文献报道,提出其发生机制可能与生命早期肠道菌群异常有关。同时,简要阐明了生命早期肠道菌群的组成特征及其影响因素,并系统阐述了生命早期肠道菌群异常参与发育源性OP相关的临床与实验室研究。最后,鉴于生命早期肠道菌群在骨骼发育中的重要作用,从益生菌/益生元两方面总结生命早期干预肠道菌群策略对宿主生长发育及骨量的影响,为防治发育源性OP提供新思路与新策略。 展开更多
关键词 骨质疏松症 肠道菌群 生命早期 发育源性疾病
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空间生命学科发展战略研究
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作者 赵玉芬 华跃进 +7 位作者 李一良 孙野青 姚伟 郑慧琼 郝记华 应见喜 陈宇综 田兵 《空间科学学报》 CAS CSCD 北大核心 2024年第3期387-399,共13页
空间生命学科是一门致力于研究在空间环境条件下生命起源、演化及其分布,生命现象及其规律的学科.该学科从理论和实验两个层面深入探讨生命起源和早期演化机制,同时也探索地外天体生命的宜居性、存在形式等基本科学问题.随着中国空间站... 空间生命学科是一门致力于研究在空间环境条件下生命起源、演化及其分布,生命现象及其规律的学科.该学科从理论和实验两个层面深入探讨生命起源和早期演化机制,同时也探索地外天体生命的宜居性、存在形式等基本科学问题.随着中国空间站、嫦娥工程和天问系列等大科学计划的实施,中国空间生命科学研究进入了一个高速发展阶段.本文对空间生命领域的发展态势进行了梳理,提炼出了中国未来空间生命学科的重点发展领域,并针对学科布局进行优化,旨在推动空间生命科学研究的高质量发展. 展开更多
关键词 空间生命 生命起源 生命探索 发展态势 战略规划
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纳米酶与生命起源
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作者 马龙 梁子墨 +3 位作者 侯银银 冯静 范克龙 阎锡蕴 《生物化学与生物物理进展》 SCIE CAS CSCD 北大核心 2024年第10期2274-2291,共18页
纳米酶是中国科学家发现的纳米材料的全新特性,其不仅具有类似天然酶的高催化活性,还呈现稳定性高、活性可调以及低温催化等特点。纳米酶的发现首次揭示了无机纳米材料的生物催化活性。而无机矿物也被认为是生命起源重要催化剂,参与早... 纳米酶是中国科学家发现的纳米材料的全新特性,其不仅具有类似天然酶的高催化活性,还呈现稳定性高、活性可调以及低温催化等特点。纳米酶的发现首次揭示了无机纳米材料的生物催化活性。而无机矿物也被认为是生命起源重要催化剂,参与早期生物分子的合成。无机矿物不仅能够通过氧化还原反应促进无机小分子向有机小分子的转化,还能够利用其表面结构实现手性选择、生物大分子合成以及发挥辐射保护功能。最新研究表明,无机纳米材料不仅可以温和催化生物分子合成,也能够参与生物大分子的聚合和辐射保护。不仅如此,纳米矿物也被发现广泛存在于地球和地外空间中。因此,本文将基于无机矿物在生命起源中的不同作用,结合纳米酶的特性,探讨纳米酶作为生命起源过程催化剂的可能,为生命起源研究提供新的方向。 展开更多
关键词 生命起源 化学起源 无机矿物 纳米酶
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蔡锷坚守初心的人生历程及现实启示
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作者 陈邵桂 《湖南工业大学学报(社会科学版)》 2024年第1期103-108,115,共7页
蔡锷出身于贫寒的农村家庭,年少即深切感受民众疾苦,早年立志救国救民,确立了“为国家不为权利”的初心。他顺应近代中国历史发展的潮流,在辛亥革命武昌首义后发动和领导了昆明“重九”起义;在袁世凯复辟帝制时,不顾个人安危毅然发动和... 蔡锷出身于贫寒的农村家庭,年少即深切感受民众疾苦,早年立志救国救民,确立了“为国家不为权利”的初心。他顺应近代中国历史发展的潮流,在辛亥革命武昌首义后发动和领导了昆明“重九”起义;在袁世凯复辟帝制时,不顾个人安危毅然发动和领导反袁护国战争,阻止了近代中国历史倒退,“再造共和”。蔡锷用一生践行初心,并为之贡献了人生最为宝贵的生命。在中国特色社会主义进入新时代之际,回顾蔡锷坚守初心的人生历程,具有重要的现实启示意义。 展开更多
关键词 蔡锷 坚守初心 人生历程 现实意义
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王船山人本思想中的生命本义诠释的三维面向
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作者 李长泰 《衡阳师范学院学报》 2024年第1期9-14,共6页
王船山有丰富的人本思想,其人本内涵是从人本生命上述说的。生命是人成为人的基本前提,是天理和本性的载体,因此,生命本义是人本内涵的最基本的本义。生命本义包括气、利、情三个方面,气以生人、利以生人、情以生人,都说明生命存在是最... 王船山有丰富的人本思想,其人本内涵是从人本生命上述说的。生命是人成为人的基本前提,是天理和本性的载体,因此,生命本义是人本内涵的最基本的本义。生命本义包括气、利、情三个方面,气以生人、利以生人、情以生人,都说明生命存在是最基本的人本内涵。气以生人是说阴阳之气造就人,利以生人是说物质利益养活人,情以生人是说欲望情感是人的自然属性。以生为本的人本本义说明人与生俱来具有三个方面的根本:人本是宇宙之生,即原初天生的生命体;人本是自然之生,即自然物生的生命体;人本是情感之生,即欲望情感的生命体。船山对人本生命的本义论述彰显了船山学术的启蒙性质。 展开更多
关键词 王船山 人本思想 生命本义 三维面向
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陇东南民间美术作品中的生命意蕴及其文化渊源
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作者 余永红 《民族艺林》 2024年第3期126-137,共12页
陇东南是古代关中通往西部的主要枢纽,也是远古时期民族迁徙与文化融合的重要区域,有着独特的地域文化。文章从历史文化的视角,通过对陇东南地区史前考古资料以及文物图像资料的梳理,和民间刺绣、剪纸、雕刻等艺术造型及图案的分析,认... 陇东南是古代关中通往西部的主要枢纽,也是远古时期民族迁徙与文化融合的重要区域,有着独特的地域文化。文章从历史文化的视角,通过对陇东南地区史前考古资料以及文物图像资料的梳理,和民间刺绣、剪纸、雕刻等艺术造型及图案的分析,认为陇东南民间美术作品具有深厚悠久的文化渊源和强烈的生命意蕴。文章契合国家“华夏文明传承创新区”建设文化发展战略目标,具有重要的理论价值与现实意义。 展开更多
关键词 陇东南 民间美术 文化渊源 生命意蕴
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关注环境、立足疾病的大型出生队列研究平台
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作者 陈倩 田英 +1 位作者 孙锟 张军 《临床儿科杂志》 CAS CSCD 北大核心 2024年第9期753-757,共5页
基于健康与疾病的发展起源学说,上海交通大学医学院附属新华医院启动了生命早期疾病与健康的大型科学研究——“上海优生队列”和“千天计划”,利用专业的知识和视角,聚焦生命早期1000天,关注母亲孕期和宝宝出生后的健康、社会及理化环... 基于健康与疾病的发展起源学说,上海交通大学医学院附属新华医院启动了生命早期疾病与健康的大型科学研究——“上海优生队列”和“千天计划”,利用专业的知识和视角,聚焦生命早期1000天,关注母亲孕期和宝宝出生后的健康、社会及理化环境、营养等多方面环境因素,为发育源性疾病的预防和治疗提供研究依据。 展开更多
关键词 健康与疾病的发展起源学说 上海优生儿童队列 千天计划 发育源性疾病
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集市蔬果的装饰化塑形以及在纺织品设计中的应用
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作者 杨雨欣 《纺织报告》 2024年第1期61-64,共4页
互联网大数据时代激发了人们对个性化、多元化、沉浸式体验感的迫切需求,而设计的同质化现象已屡遭诟病,亟须改变。回归“艺术源于生活”的原创设计理念,从日常生活中汲取灵感,塑造生动鲜活的装饰艺术图形。文章遵循“生活是艺术创作源... 互联网大数据时代激发了人们对个性化、多元化、沉浸式体验感的迫切需求,而设计的同质化现象已屡遭诟病,亟须改变。回归“艺术源于生活”的原创设计理念,从日常生活中汲取灵感,塑造生动鲜活的装饰艺术图形。文章遵循“生活是艺术创作源泉”的理念,对集市蔬果实地的感知发现与设计方法进行探讨,以瓜果蔬菜的极繁美为主题,拓展纺织品图案设计的生活素材源,提高多元化装饰题材的可能性,让从生活中获取第一手资料的原创理念深潜于心,建构中国特色的原创设计体系。 展开更多
关键词 艺术源于生活 集市蔬果集成美 纺织品图案应用
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黄酒市场营销推广中存在的技术性问题剖析
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作者 王益翔 《酿酒》 CAS 2024年第3期30-32,共3页
黄酒发展过程中产生的一些技术性问题还未被大家认知,从一定程度上影响了黄酒的市场推广。传统工艺生产的高端陈年酒品质更佳,而新工艺机械化黄酒品质稳定,性价比更高。原酒与普通成品酒是二种不同风格的产品,本色黄酒倡导回归自然的理... 黄酒发展过程中产生的一些技术性问题还未被大家认知,从一定程度上影响了黄酒的市场推广。传统工艺生产的高端陈年酒品质更佳,而新工艺机械化黄酒品质稳定,性价比更高。原酒与普通成品酒是二种不同风格的产品,本色黄酒倡导回归自然的理念,但在推广宣传中不能夸大焦糖色的副作用。不同厂家产品的保质期不一致并非质量原因,更多是厂家的不同经营理念。只有让消费者对黄酒的认知和接受度不断提高,才能使黄酒行业持续健康地发展。 展开更多
关键词 黄酒酿造工艺 原酒 本色黄酒 保质期
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A possible anorthositic continent of early Mars and the role of planetary size for the inception of Earth-like life 被引量:2
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作者 James M.Dohm Shigenori Maruyama +1 位作者 Motoyuki Kido Victor R.Baker 《Geoscience Frontiers》 SCIE CAS CSCD 2018年第4期1085-1098,共14页
The Moon has an anorthositic primordial continental crust. Recently anorthosite has also been discovered on the Martian surface. Although the occurrence of anorthosite is observed to be very limited in Earth's extant... The Moon has an anorthositic primordial continental crust. Recently anorthosite has also been discovered on the Martian surface. Although the occurrence of anorthosite is observed to be very limited in Earth's extant geological record,both lunar and Martian surface geology suggest that anorthosite may have comprised a primordial continent on the early Earth during the first 600 million years after its formation. We hypothesized that differences in the presence of an anorthositic continent on an Earthlike planet are due to planetary size. Earth likely lost its primordial anorthositic continent by tectonic erosion through subduction associated with a kind of proto-plate tectonics(PPT). In contrast, Mars and the Moon, as much smaller planetary bodies, did not lose much of their anorthositic continental crust because mantle convection had weakened and/or largely stopped, and with time, they had appropriately cooled down. Applying this same reasoning to a super-Earth exoplanet suggests that, while a primordial anorthositic continent may briefly form on its surface, such a continent will be likely transported into the deep mantle due to intense mantle convection immediately following its formation. The presence of a primordial continent on an Earth-like planet seems to be essential to whether the planet will be habitable to Earth-like life. The key role of the primordial continent is to provide the necessary and sufficient nutrients for the emergence and evolution of life. With the appearance of a "trinity" consisting of(1) an atmosphere,(2) an ocean, and(3) the primordial continental landmass, material circulation can be maintained to enable a "Habitable Trinity" environment that will permit the emergence of Earth-like life. Thus, with little likelihood of a persistent primordial continent, a super-Earth affords very little chance for Earth-like life to emerge. 展开更多
关键词 Anorthosite on Mars MOON Habitable trinity Super-Earth Plate tectonics origin of life
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