About: Deciphering Biosignatures in Planetary Contexts

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An Entity of Type : schema:ScholarlyArticle, within Data Space : wasabi.inria.fr associated with source document(s)

Attributes	Values
type	Academic Article research paper schema:ScholarlyArticle
isDefinedBy	Covid-on-the-Web dataset
title	Deciphering Biosignatures in Planetary Contexts
Creator	Spear, John Awramik, Stanley Boston, Penelope Bower, Dina Chan, Marjorie Cleaves, Henderson Des Marais, David Farmer, Jack Gillams, Richard Hazen, Robert Hinman, Nancy Jia, Tony King, Penelope Papineau, Dominic Rempfert, Kaitlin Schubert, Keith Southam, Gordon Stern, Jennifer Lé, Richard Nica Sá Nchez-Romá, Mó Potter-Mcintyre, Sally
source	PMC
abstract	Microbial life permeates Earth's critical zone and has likely inhabited nearly all our planet's surface and near subsurface since before the beginning of the sedimentary rock record. Given the vast time that Earth has been teeming with life, do astrobiologists truly understand what geological features untouched by biological processes would look like? In the search for extraterrestrial life in the Universe, it is critical to determine what constitutes a biosignature across multiple scales, and how this compares with “abiosignatures” formed by nonliving processes. Developing standards for abiotic and biotic characteristics would provide quantitative metrics for comparison across different data types and observational time frames. The evidence for life detection falls into three categories of biosignatures: (1) substances, such as elemental abundances, isotopes, molecules, allotropes, enantiomers, minerals, and their associated properties; (2) objects that are physical features such as mats, fossils including trace-fossils and microbialites (stromatolites), and concretions; and (3) patterns, such as physical three-dimensional or conceptual n-dimensional relationships of physical or chemical phenomena, including patterns of intermolecular abundances of organic homologues, and patterns of stable isotopic abundances between and within compounds. Five key challenges that warrant future exploration by the astrobiology community include the following: (1) examining phenomena at the “right” spatial scales because biosignatures may elude us if not examined with the appropriate instrumentation or modeling approach at that specific scale; (2) identifying the precise context across multiple spatial and temporal scales to understand how tangible biosignatures may or may not be preserved; (3) increasing capability to mine big data sets to reveal relationships, for example, how Earth's mineral diversity may have evolved in conjunction with life; (4) leveraging cyberinfrastructure for data management of biosignature types, characteristics, and classifications; and (5) using three-dimensional to n-D representations of biotic and abiotic models overlain on multiple overlapping spatial and temporal relationships to provide new insights.
has issue date	2019-09-01(xsd:dateTime)
bibo:doi	10.1089/ast.2018.1903
bibo:pmid	31335163
has license	cc-by
sha1sum (hex)	002c8c43cea5f3ec8c97d30fe181c01b919d789a
schema:url	https://doi.org/10.1089/ast.2018.1903
resource representing a document's title	Deciphering Biosignatures in Planetary Contexts
has PubMed Central identifier	PMC6708275
has PubMed identifier	31335163
schema:publication	Astrobiology
resource representing a document's body	covid:002c8c43cea5f3ec8c97d30fe181c01b919d789a#body_text
is schema:about of	named entity 'fossils' named entity 'provide' named entity 'biosignatures' named entity 'allotropes' named entity 'stable' named entity 'spatial scales' named entity 'MATS' named entity 'CRITICAL' named entity 'WHAT' named entity 'MOLECULES' named entity 'MODELING' named entity 'TRACE' named entity 'NEARLY' named entity 'LIKE' named entity 'CHALLENGES' named entity 'HOW' named entity 'ORGANIC' named entity 'SCALES' named entity 'ISOTOPIC' named entity 'DETERMINE' named entity 'SEDIMENTARY ROCK' named entity '283' named entity 'LIFE' named entity 'falls' named entity 'isotopes' named entity 'homologues' named entity 'concretions' named entity 'untouched' named entity 'biotic' named entity 'life' named entity 'processes' named entity 'compounds' named entity 'abundances' named entity 'astrobiologists' named entity 'sedimentary rock' named entity 'geological features' named entity 'abiotic' named entity 'intermolecular' named entity 'microbialites' named entity 'stromatolites' named entity 'stable isotopic' named entity 'enantiomers' named entity 'Earth' named entity 'histogram' named entity 'carbonate' named entity 'Earth' named entity 'morphologic' named entity 'proteinogenic amino acids' named entity 'hematite' named entity 'mineral' named entity 'respiration' named entity 'photodissociation' named entity 'morphological' named entity 'organic molecules' named entity 'biotic' named entity 'homochiral' named entity 'histogram' named entity 'organic matter' named entity 'millions of years' named entity 'emergence of life' named entity 'billions of years'

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