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preprints
2024
置信度 0.74
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preprints
2023
置信度 0.74
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The emergence of eukaryotes from a merger between an archaeon and a bacterial cell ∼two billion years ago involved a profound change in cellular organisation. While the order in which different features of the eukaryotic cell arose remains a matter of controve…
preprints
2025
置信度 0.74
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preprints
2025
置信度 0.74
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preprints
2023
置信度 0.74
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Meromictic lakes serve as analogs for redox-stratified ancient oceans with well-mixed surface waters and anoxic bottoms. Purple and green sulfur bacteria (PSB, GSB) dominate the anoxic zones where light penetrates, and their biosignatures can be used to guide …
europepmc
2026
置信度 0.80
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preprints
2023
置信度 0.74
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preprints
2022
置信度 0.74
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preprints
2021
置信度 0.74
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preprints
2021
置信度 0.74
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ABSTRACT Life on Earth is about 4 billion years old—nearly as old as the planet itself. Over this immense timespan, living systems and their biomolecules have both adapted to and driven profound changes in the Earth’s environment. Among these, certain critical…
preprints
2024
置信度 0.74
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preprints
2021
置信度 0.74
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preprints
2024
置信度 0.74
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preprints
2021
置信度 0.74
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preprints
2020
置信度 0.74
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preprints
2025
置信度 0.74
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preprints
2018
置信度 0.74
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preprints
2019
置信度 0.74
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preprints
2019
置信度 0.74
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preprints
2018
置信度 0.74
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preprints
2022
置信度 0.74
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preprints
2018
置信度 0.74
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preprints
2023
置信度 0.74
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preprints
2016
置信度 0.74
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preprints
2015
置信度 0.74
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preprints
2020
置信度 0.74
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Alex Ellery
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Abstract During 20 years, the European astrobiologists collaborated within EANA, the European Astrobiology Network Association, to help European researchers developing astrobiology programmes to share their knowledge, to foster their cooperation, to attract yo…
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John Baross, Chris Impey
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Astrobiology is often defined as the study of the origin, evolution, distribution, and future of life on Earth and in the Universe. As a discipline that emerged in the past decades of the 20th century, its contours have not always been straightforward, resulti…
pubmed
Christophe Malaterre, Francis Lareau, Malaterre C, Lareau F
2023 May
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The word astrobiology was possibly first used in 1935, in an article published in a French popular science magazine. The author was Ary J. Sternfeld (1905–1980), a pioneer of astronautics who wrote numerous scientific books and papers. The article is remarkabl…
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2003-02-19T19:35:33Z
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Wolf D. Geppert
2023-07-27T09:02:26Z
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Vera M. Kolb
2023-11-09T19:06:13Z
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Table of Contents Executive Summary Introduction Scientific Priorities for a Possible Late-Decade Rover Mission Development of a Spectrum of Possible Mission Concepts Evaluation, Prioritization of Candidate Mission Concepts Strategy to Achieve Primary In Situ …
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2010-04-19T15:34:26Z
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2014-06-13T14:39:29Z
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2003-02-05T17:40:04Z
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Milan M. Ćirković
2018-04-20T14:37:30Z
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2003-05-21T20:04:06Z
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Nikos Prantzos
2007-01-04T14:22:11Z
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Steven J. Dick
2012-10-18T20:02:51Z
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F.J. Molster
2006-03-04T14:13:41Z
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William M. Irvine
2023-07-27T09:05:47Z
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2006-03-21T11:16:57Z
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2026-07-31T10:13:24Z
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Wolf D. Geppert
2021-08-30T08:16:51Z
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Recovery of prokaryotic body fossils from methane seep carbonates such as those of the Cretaceous Tepee Buttes of Colorado serves as a model for sampling in future astrobiological missions. The fossils, found primarily at the interface between paragenetic fabr…
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Russell Scott Shapiro
2004-12-20T08:03:43Z
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Nunzia Stivaletta, Roberto Barbieri
2008-11-06T14:06:41Z
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John R. Brucato
2022-09-22T21:02:53Z
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Sherwin Gormly, V. D. Adams, Eric Marchand
2004-02-02T18:21:47Z
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John R. Brucato
2023-07-27T09:05:47Z
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William M. Irvine
2023-07-27T09:05:47Z
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2003-02-05T17:40:04Z
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Sun Kwok
2019-06-03T12:57:37Z
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Charles S. Cockell
2023-07-27T09:05:47Z
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2012-02-08T10:20:43Z
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2009-12-30T13:50:03Z
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crossref
John R. Brucato
2018-06-22T08:16:44Z
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Abstract Whereas the Solar System has Mars and Europa as the best candidates for finding fossil/extant life as we know it – based on complex carbon compounds and liquid water – the 263 (non-pulsar) planetary systems around other stars as known at 15 September …
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B.W. Jones
2008-12-04T10:44:42Z
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Cardinal Giovanni Lajolo
2012-12-05T22:49:44Z
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2003-02-19T19:35:33Z
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Manasvi Lingam
2025-04-10T16:11:46Z
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Sabatino Sofia
2011-10-07T19:01:18Z
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2015-02-14T10:15:45Z
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Abstract Here we present the resistance of two halophilic Archaea, Halorubrum ( Hrr .) sp. AS12 and Haloarcula ( Har. ). sp. NS06, isolated from the brine in Lunenburg, Germany, to stress factors including desiccation, radiation and elevated perchlorate concen…
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2009-04-08T21:51:21Z
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Abstract Astrobiology has been gaining increasing scientific prominence and public attention as the search for life beyond Earth continues to make significant headway on multiple fronts. In view of these recent developments, the fascinating and dynamic etymolo…
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2020-07-01T06:12:07Z
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Abstract Astrobioethics is an emerging discipline that studies, evaluates and analyses the moral, legal and social issues of the search for life in the Universe. As a new field of study, it requires an epistemological foundation to be able to be recognized as …
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Abstract From Darwin to the double helix, the last 150 years have seen revolutionary changes in our understanding of life in the Universe. In this time, works of science fiction have provided a valuable, and often overlooked, reflection of the assumptions and …
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