{"title":"加速外太空生物进化:数值分析的启示","authors":"","doi":"10.1016/j.actaastro.2024.09.044","DOIUrl":null,"url":null,"abstract":"<div><div>As humanity continues its space exploration, understanding biological evolution in extraterrestrial environments will become crucial. On Earth, organisms have adapted to new environments, and some genetic data indicate positive natural selection. This paper investigates the impact of space environments, such as high radiation and microgravity, which may lead to high mutation rates and positive selection, on biological evolution, using numerical analysis. It quantifies the evolutionary rates and the time until a new mutation reaches fixation (100 % frequency within population) beyond Earth. The findings reveal accelerated evolution rates, 1,000 to 10,000 times faster than on Earth for beneficial mutations, with the time until fixation being 0.002 to 0.004 times shorter, assuming mutation rates are 10–100 times higher. These results offer insights into various areas, including space facility design, space agriculture, astrobiological exploration, and life sustainability beyond Earth and Solar System, illuminating the potential for a ‘Big Bang of Evolution’ in outer space.</div></div>","PeriodicalId":44971,"journal":{"name":"Acta Astronautica","volume":null,"pages":null},"PeriodicalIF":3.1000,"publicationDate":"2024-09-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Accelerated biological evolution in outer space: Insights from numerical analysis\",\"authors\":\"\",\"doi\":\"10.1016/j.actaastro.2024.09.044\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><div>As humanity continues its space exploration, understanding biological evolution in extraterrestrial environments will become crucial. On Earth, organisms have adapted to new environments, and some genetic data indicate positive natural selection. This paper investigates the impact of space environments, such as high radiation and microgravity, which may lead to high mutation rates and positive selection, on biological evolution, using numerical analysis. It quantifies the evolutionary rates and the time until a new mutation reaches fixation (100 % frequency within population) beyond Earth. The findings reveal accelerated evolution rates, 1,000 to 10,000 times faster than on Earth for beneficial mutations, with the time until fixation being 0.002 to 0.004 times shorter, assuming mutation rates are 10–100 times higher. These results offer insights into various areas, including space facility design, space agriculture, astrobiological exploration, and life sustainability beyond Earth and Solar System, illuminating the potential for a ‘Big Bang of Evolution’ in outer space.</div></div>\",\"PeriodicalId\":44971,\"journal\":{\"name\":\"Acta Astronautica\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":3.1000,\"publicationDate\":\"2024-09-28\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Acta Astronautica\",\"FirstCategoryId\":\"5\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S0094576524005460\",\"RegionNum\":2,\"RegionCategory\":\"物理与天体物理\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"ENGINEERING, AEROSPACE\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Acta Astronautica","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0094576524005460","RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ENGINEERING, AEROSPACE","Score":null,"Total":0}
Accelerated biological evolution in outer space: Insights from numerical analysis
As humanity continues its space exploration, understanding biological evolution in extraterrestrial environments will become crucial. On Earth, organisms have adapted to new environments, and some genetic data indicate positive natural selection. This paper investigates the impact of space environments, such as high radiation and microgravity, which may lead to high mutation rates and positive selection, on biological evolution, using numerical analysis. It quantifies the evolutionary rates and the time until a new mutation reaches fixation (100 % frequency within population) beyond Earth. The findings reveal accelerated evolution rates, 1,000 to 10,000 times faster than on Earth for beneficial mutations, with the time until fixation being 0.002 to 0.004 times shorter, assuming mutation rates are 10–100 times higher. These results offer insights into various areas, including space facility design, space agriculture, astrobiological exploration, and life sustainability beyond Earth and Solar System, illuminating the potential for a ‘Big Bang of Evolution’ in outer space.
期刊介绍:
Acta Astronautica is sponsored by the International Academy of Astronautics. Content is based on original contributions in all fields of basic, engineering, life and social space sciences and of space technology related to:
The peaceful scientific exploration of space,
Its exploitation for human welfare and progress,
Conception, design, development and operation of space-borne and Earth-based systems,
In addition to regular issues, the journal publishes selected proceedings of the annual International Astronautical Congress (IAC), transactions of the IAA and special issues on topics of current interest, such as microgravity, space station technology, geostationary orbits, and space economics. Other subject areas include satellite technology, space transportation and communications, space energy, power and propulsion, astrodynamics, extraterrestrial intelligence and Earth observations.