Results 21 to 30 of about 8,849 (202)
Frontiers in Plant Science, 2023 IntroductionThe search for life on distant exoplanets is expected to rely on atmospheric biosignatures detection, such as oxygen of biological origin.
Mariano Battistuzzi +12 more
doaj +1 more source
A review of microbial‐environmental interactions recorded in Proterozoic carbonate‐hosted chert
Geobiology, Volume 21, Issue 1, Page 3-27, January 2023., 2023 Abstract The record of life during the Proterozoic is preserved by several different lithologies, but two in particular are linked both spatially and temporally: chert and carbonate. These lithologies capture a snapshot of dominantly peritidal environments during the Proterozoic. Early diagenetic chert preserves some of the most exceptional Proterozoic
Kelsey R. Moore +5 more
wiley +1 more source
Lethaia, EarlyView., 2021 Biomineralization is a generic term used to indicate biological‐mediated mineral formation. In carbonate mineralization, nucleation of crystals can be: (1) controlled directly by the organisms, like in the skeletal formation of most metazoans; (2) induced by microbial communities, by indirect precipitation mediated by their metabolic activities; or (3)
Adriano Guido +4 more
wiley +1 more source
Deciphering Biosignatures in Planetary Contexts [PDF]
Astrobiology, 2019 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 ...
Marjorie A. Chan +20 more
openalex +8 more sources
Frontiers in Astronomy and Space Sciences, 2022 Past environments on Mars contained abundant water, suggesting certain regions may have been conducive to life as we know it and implying the potential for microbial inhabitants.
Carolynn M. Harris +7 more
doaj +1 more source
Hunting for biosignatures on Mars [PDF]
Astronomy & Geophysics, 2021 Abstract Nisha Ramkissoon, Mark Burchell, Peter Fawdon and Louisa Preston report from an RAS Specialist Discussion Meeting on finding and identifying evidence for life on ...
Ramkissoon, Nisha K. +3 more
openaire +2 more sources
The Ground-Based BIOMEX Experiment Verification Tests for Life Detection on Mars
Life, 2021 The success of an astrobiological search for life campaign on Mars, or other planetary bodies in the Solar System, relies on the detectability of past or present microbial life traces, namely, biosignatures.
Claudia Pacelli +8 more
doaj +1 more source
Biosignatures for Astrobiology
, 2018 International ...
Jorge L. Vago +2 more
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Directional aspects of vegetation linear and circular polarization biosignatures [PDF]
Astrobiology (2022), 22:9, 2022 Homochirality is a generic and unique property of all biochemical life and is considered a universal and agnostic biosignature. Upon interaction with unpolarized light, homochirality induces fractional circular polarization in the light that is scattered from it, which can be sensed remotely.
arxiv +1 more source
Urban endoliths: incidental microbial communities occurring inside concrete
AIMS Microbiology, 2023 Concrete is now a prevalent type of synthetic rock, and its production and usage have major environmental implications. Yet, assessments of ordinary concrete have rarely considered that concrete itself is potential habitat for a globally important ...
Jordan Brown +3 more
doaj +1 more source