| 星云中继假说: 星云中的原始生命和地球生命的起源 |
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| 引用本文： | 冯磊.星云中继假说: 星云中的原始生命和地球生命的起源[J].天文学报,2021,62(3):28. |
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| 作者姓名： | 冯磊 |
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| 作者单位： | 中国科学院紫金山天文台暗物质与空间天文重点实验室 南京 210023;南京大学-紫金山天文台``粒子-核-宇宙学联合研究中心'' 南京 210093 |
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| 摘 要： | 提出了关于地球生命起源的新模型---星云中继假说, 它是宇宙胚种论的修改版本. 在这个模型中, 作为宇宙``种子''的原始生命起源于太阳系的前身恒星系统中的生物化学过程, 并且在前身恒星死亡后充满整个原太阳星云. 地球生命的起源可以分为3个阶段: 太阳前身恒星的原始生命起源, 原太阳星云时期和太阳系形成与地球生命时期. 这个模型最主要的推论是原始生命(或其后裔)以及它们的化石存在于太阳系内各种天体之中.
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| 关 键 词： | 天体生物学 生命起源 原太阳星云 |
Nebula-Relay Hypothesis: Primitive Life in Nebula and Origin of Life on Earth |
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| FENG Lei.Nebula-Relay Hypothesis: Primitive Life in Nebula and Origin of Life on Earth[J].Acta Astronomica Sinica,2021,62(3):28. |
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| Authors: | FENG Lei |
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| Affiliation: | Key Laboratory of Dark Matter and Space Astronomy, Purple Mountain Observatory, Chinese Academy of Sciences, Nanjing 210023;Joint Center for Particle, Nuclear Physics and Cosmology, Nanjing University-Purple Mountain Observatory, Nanjing 210093 |
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| Abstract: | A modified version of panspermia theory, named Nebula-Relay hypothesis or local panspermia, is introduced to explain the origin of life on Earth. Primitive life, acting as the seeds of life on Earth, originated at pre-solar epoch through physicochemical processes and then filled in the pre-solar nebula after the death of pre-solar star. Then the history of life on the Earth can be divided into three epochs: the formation of primitive life in the pre-solar epoch; pre-solar nebula epoch; the formation of solar system and the Earth age of life. The main prediction of our model is that primitive life existed in the pre-solar nebula (even in the current nebulas) and the celestial body formed therein (i.e. solar system). |
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| Keywords: | astrobiology origin of life pre-solar nebula |
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