Biosignature
A biosignature (sometimes called chemical fossil or molecular fossil ) is any substance – such as an element, isotope , molecule , or phenomenon – that provides scientific evidence of past or present life . [1] [2] [3] Measurable attributes of life include its complex physical and chemical structures and also its utilization of free energy and the production of biomass and wastes . Due to its unique characteristics, a biosignature can be interpreted as having been produced by living organisms ; however, it is important that they not be considered definitive because there is no way of knowing in advance which ones are universal to life and which ones are unique to the peculiar circumstances of life on Earth. [4] Nonetheless, life forms are known to shed unique chemicals, including DNA , into the environment as evidence of their presence in a particular location. [5]
Page Revisions
| Year | Metadata | Sections | Top Words | First Paragraph |
| 2018 |
176983 characters 9 sections 20 paragraphs 8 images 340 internal links 85 external links |
biosignature 0.432 biosignatures 0.380 life 0.220 biogenic 0.194 organic 0.171 methane 0.167 signatures 0.132 acids 0.119 fatty 0.108 isotopic 0.101 lipids 0.099 example 0.094 oxidants 0.086 exomars 0.078 bacteria 0.077 |
A biosignature (sometimes called chemical fossil or molecular fossil ) is any substance – such as an element, isotope , molecule , or phenomenon – that provides scientific evidence of past or present life . [1] [2] [3] Measurable attributes of life include its complex physical and chemical structures and also its utilization of free energy and the production of biomass and wastes . Due to its unique characteristics, a biosignature can be interpreted as having been produced by living organisms ; however, it is important that they not be considered definitive because there is no way of knowing in advance which ones are universal to life and which ones are unique to the peculiar circumstances of life on Earth. [4] Nonetheless, life forms are known to shed unique chemicals, including DNA , into the environment as evidence of their presence in a particular location. [5] |
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| 2017 |
171111 characters 8 sections 18 paragraphs 8 images 352 internal links 79 external links |
biosignatures 0.397 biosignature 0.375 biogenic 0.260 life 0.221 organic 0.178 methane 0.159 signatures 0.138 fatty 0.113 isotopic 0.105 acids 0.099 example 0.099 oxidants 0.090 bacteria 0.081 alcohols 0.080 habitability 0.078 |
A biosignature (sometimes called chemical fossil or molecular fossil ) is any substance – such as an element, isotope , molecule , or phenomenon – that provides scientific evidence of past or present life . [1] [2] [3] Measurable attributes of life include its complex physical and chemical structures and also its utilization of free energy and the production of biomass and wastes . Due to its unique characteristics, a biosignature can be interpreted as having been produced by living organisms ; however, it is important that they not be considered definitive because there is no way of knowing in advance which ones are universal to life and which ones are unique to the peculiar circumstances of life on Earth. [4] Nonetheless, life forms are known to shed unique chemicals, including DNA , into the environment as evidence of their presence in a particular location. [5] |
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| 2016 |
165147 characters 7 sections 15 paragraphs 8 images 345 internal links 72 external links |
biosignature 0.404 biosignatures 0.337 biogenic 0.249 life 0.229 organic 0.192 methane 0.137 signatures 0.123 fatty 0.121 isotopic 0.113 acids 0.107 oxidants 0.097 example 0.096 exomars 0.088 bacteria 0.087 alcohols 0.086 |
A biosignature is any substance – such as an element, isotope , molecule , or phenomenon – that provides scientific evidence of past or present life . [1] [2] [3] Measurable attributes of life include its complex physical and chemical structures and also its utilization of free energy and the production of biomass and wastes . Due to its unique characteristics, a biosignature can be interpreted as having been produced by living organisms ; however, it is important that they not be considered definitive because there is no way of knowing in advance which ones are universal to life and which ones are unique to the peculiar circumstances of life on Earth. [4] Nonetheless, life forms are known to shed unique chemicals, including DNA , into the environment as evidence of their presence in a particular location. [5] |
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| 2015 |
96868 characters 7 sections 13 paragraphs 5 images 246 internal links 57 external links |
biosignature 0.403 biosignatures 0.336 biogenic 0.279 life 0.218 organic 0.191 methane 0.136 signatures 0.123 fatty 0.121 isotopic 0.113 acids 0.106 oxidants 0.097 example 0.096 exomars 0.088 bacteria 0.087 alcohols 0.086 |
A biosignature is any substance – such as an element, isotope , molecule , or phenomenon – that provides scientific evidence of past or present life . [1] [2] [3] Measurable attributes of life include its complex physical and chemical structures and also its utilization of free energy and the production of biomass and wastes . Due to its unique characteristics, a biosignature can be interpreted as having been produced by living organisms ; however, it is important that they not be considered definitive because there is no way of knowing in advance which ones are universal to life and which ones are unique to the peculiar circumstances of life on Earth. [4] Nonetheless, life forms are known to shed unique chemicals, including DNA , into the environment as evidence of their presence in a particular location. [5] |
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| 2014 |
94876 characters 7 sections 13 paragraphs 4 images 242 internal links 55 external links |
biosignature 0.405 biosignatures 0.338 biogenic 0.280 life 0.210 organic 0.192 methane 0.137 signatures 0.124 fatty 0.121 isotopic 0.114 acids 0.107 oxidants 0.097 example 0.097 exomars 0.088 bacteria 0.087 alcohols 0.086 |
A biosignature is any substance – such as an element, isotope , molecule , or phenomenon – that provides scientific evidence of past or present life . [1] [2] [3] Measurable attributes of life include its complex physical and chemical structures and also its utilization of free energy and the production of biomass and wastes . Due to its unique characteristics, a biosignature can be interpreted as having been produced by living organisms ; however, it is important that they not be considered definitive because there is no way of knowing in advance which ones are universal to life and which ones are unique to the peculiar circumstances of life on Earth. [4] |
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| 2013 |
85277 characters 7 sections 12 paragraphs 4 images 226 internal links 48 external links |
biosignature 0.413 biosignatures 0.344 biogenic 0.286 life 0.204 organic 0.179 methane 0.139 signatures 0.126 fatty 0.124 isotopic 0.116 acids 0.109 oxidants 0.099 example 0.098 exomars 0.090 bacteria 0.089 alcohols 0.088 |
A biosignature is any substance – such as an element, isotope , molecule , or phenomenon – that provides scientific evidence of past or present life . [1] [2] [3] Measurable attributes of life include its complex physical and chemical structures and also its utilization of free energy and the production of biomass and wastes . Due to its unique characteristics, a biosignature can be interpreted as having been produced by living organisms ; however, it is important that they not be considered definitive because there is no way of knowing in advance which ones are universal to life and which ones are unique to the peculiar circumstances of life on Earth. [4] |
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| 2012 |
75521 characters 5 sections 10 paragraphs 3 images 215 internal links 41 external links |
biosignature 0.490 biosignatures 0.327 life 0.243 biogenic 0.226 fatty 0.147 methane 0.145 acids 0.129 example 0.117 bacteria 0.105 alcohols 0.105 isotopic 0.103 isotope 0.096 structures 0.095 abiotic 0.093 geochemical 0.091 |
A biosignature is any substance - such as an element, isotope , molecule , or phenomenon - that provides scientific evidence of past or present life . [1] [2] Measurable attributes of life include its complex physical and chemical structures and also its utilization of free energy and the production of biomass and wastes . Due to its unique characteristics, a biosignature can be interpreted as having been produced by living organisms ; however, it is important that they not be considered definitive because there is no way of knowing in advance which ones are universal to life and which ones are unique to the peculiar circumstances of life on Earth. [3] |
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| 2011 |
65596 characters 5 sections 10 paragraphs 3 images 205 internal links 31 external links |
biosignature 0.507 biosignatures 0.338 biogenic 0.234 life 0.227 fatty 0.152 acids 0.134 example 0.121 bacteria 0.109 alcohols 0.108 methane 0.107 isotopic 0.107 isotope 0.099 structures 0.098 abiotic 0.096 signatures 0.093 |
A biosignature is any substance -such as an element, isotope , or molecule - or phenomenon that provides scientific evidence of past or present life . [1] [2] Measurable attributes of life include its complex physical and chemical structures and also its utilization of free energy and the production of biomass and wastes . Due to its unique characteristics, a biosignature can be interpreted as having been produced by living organisms , however, it is important that they not be considered definitive because there is no way of knowing in advance which ones are universal to life and which ones are unique to the peculiar circumstances of life on Earth. [3] |
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| 2010 |
38245 characters 6 sections 9 paragraphs 2 images 168 internal links 4 external links |
biosignature 0.534 biosignatures 0.297 fatty 0.237 alcohols 0.190 biomarker 0.190 biogenic 0.182 life 0.182 bacteria 0.128 chain 0.123 acids 0.118 alkanes 0.113 example 0.099 alh84001 0.097 biochemical 0.095 odd 0.088 |
A biosignature , or biomarker , is any phenomenon produced by life , either modern or ancient. [1] Due to its unique biogenic characteristics, a definitive biosignature can be interpreted without question as having been produced by life. The term biomarker is sometimes used as a synonym. 'Potential biosignature' is a phenomenon that may have been produced by life, but for which alternate abiotic origins may also be possible. |
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| 2009 |
18349 characters 6 sections 8 paragraphs 2 images 48 internal links 3 external links |
biosignature 0.472 biosignatures 0.300 fatty 0.270 alcohols 0.216 biomarker 0.216 acids 0.178 life 0.175 bacteria 0.145 chain 0.140 alkanes 0.128 alh84001 0.110 biochemical 0.108 odd 0.100 example 0.096 lengths 0.096 |
A biosignature , or biomarker , is any phenomenon produced by life , either modern or ancient. [1] Due to its unique biogenic characteristics, a definitive biosignature can be interpreted without question as having been produced by life. The term biomarker is sometimes used as a synonym. 'Potential biosignature' is a phenomenon that may have been produced by life, but for which alternate abiotic origins may also be possible. |
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| 2008 |
10430 characters 5 sections 10 paragraphs 1 images 40 internal links 2 external links |
biosignatures 0.346 biosignature 0.311 fatty 0.311 alcohols 0.249 bacteria 0.167 biomarker 0.166 chain 0.161 acids 0.154 alkanes 0.148 life 0.128 alh84001 0.127 biochemical 0.124 odd 0.116 lengths 0.111 disease 0.108 |
A biosignature , generally, is a measurable phenomenon that indicates the presence of life . The term biomarker is sometimes used as a synonym. |
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| 2007 |
10679 characters 5 sections 10 paragraphs 1 images 41 internal links 2 external links |
2. Biosignatures in Geochemistry 3. Biosignatures in Astrobiology |
biosignatures 0.346 biosignature 0.311 fatty 0.311 alcohols 0.249 bacteria 0.167 biomarker 0.166 chain 0.161 acids 0.154 alkanes 0.148 life 0.128 alh84001 0.127 biochemical 0.124 odd 0.116 lengths 0.111 disease 0.108 |
A Biosignature , generally, is a measurable phenomenon that indicates the presence of life . The term biomarker is sometimes used as a synonym. |
| 2006 |
7003 characters 4 sections 7 paragraphs 0 images 25 internal links 2 external links |
1. The Viking Missions to Mars |
biosignatures 0.339 bacteria 0.263 biosignature 0.244 fatty 0.244 biochemical 0.195 disease 0.169 geomicrobiology 0.144 obtainable 0.144 experiments 0.140 sample 0.138 viking 0.135 ascertain 0.130 alcohols 0.130 biomarker 0.130 planktonic 0.130 |
in that specimen because it was believed until recently that only bacteria could create crystals of their specific shape. Other potential biosignatures studied in the ALH84001 meteorite included putative nanofossils , tiny rocklike structures whose shape was a potential biosignature because it resembled known bacteria. Most scientists ultimately concluded that these were far too small to be fossilized cells . |
| 2005 |
6682 characters 3 sections 7 paragraphs 1 images 30 internal links 0 external links |
biosignature 0.438 biosignatures 0.365 biomarker 0.234 life 0.181 alh84001 0.179 bacteria 0.177 geomicrobiology 0.129 experiments 0.125 crystals 0.123 viking 0.121 fatty 0.109 geochemists 0.109 potential 0.105 meteorite 0.103 scans 0.100 |
A Biosignature , generally, is a measurable phenomenon that indicates the presence of life . The term biomarker is sometimes used as a synonym. |
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| 2004 |
6620 characters 3 sections 7 paragraphs 1 images 30 internal links 0 external links |
biosignature 0.438 biosignatures 0.365 biomarker 0.234 life 0.181 alh84001 0.179 bacteria 0.177 geomicrobiology 0.129 experiments 0.125 crystals 0.123 viking 0.121 fatty 0.109 geochemists 0.109 potential 0.105 meteorite 0.103 scans 0.100 |
A Biosignature , generally, is a measurable phenomenon that indicates the presence of life . The term biomarker is sometimes used as a synonym. |