Results 11 to 20 of about 11,414 (233)
Exoplanets: Possible Biosignatures [PDF]
Proceedings of Frontier Research in Astrophysics – II — PoS(FRAPWS2016), 2017 The ancestor philosophers' dream of thousands of new worlds is finally realised: about 3500 extrasolar planets have been discovered in the neighborhood of our Sun. Most of them are very different from those we used to know in our Solar System.
Claudi, R.
core +3 more sources
On biosignatures for Mars [PDF]
International Journal of Astrobiology, 2021 AbstractIn this work, we address the difficulty of reliably identifying traces of life on Mars. Several independent lines of evidence are required to build a compelling body of proof. In particular, we underline the importance of correctly interpreting the geological and mineralogical context of the sites to be explored for the presence of ...
Westall, Frances +5 more
openaire +3 more sources
Is There Such a Thing as a Biosignature?
Astrobiology, 2023 The concept of a biosignature is widely used in astrobiology to suggest a link between some observation and a biological cause, given some context. The term itself has been defined and used in several ways in different parts of the scientific community involved in the search for past or present life on Earth and beyond. With the ongoing acceleration in
Malaterre, Christophe +13 more
openaire +7 more sources
Biosignatures for Astrobiology
, 2018 This book aims at providing a brief but broad overview of biosignatures. The topics addressed range from prebiotic signatures in extraterrestrial materials to the signatures characterising extant life as well as fossilised life, biosignatures related to space, and space flight instrumentation to detect biosignatures either in situ or from orbit.
Jorge L. Vago +2 more
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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
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
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
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
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