Results 11 to 20 of about 9,833 (194)
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 +2 more sources
Alternative Methylated Biosignatures. I. Methyl Bromide, a Capstone Biosignature
The Astrophysical Journal, 2022 Abstract The first potential exoplanetary biosignature detections are likely to be ambiguous due to the potential for false positives: abiotic planetary processes that produce observables similar to those anticipated from a global biosphere. Here we propose a class of methylated gases as corroborative “capstone” biosignatures.
Michaela Leung +3 more
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Exoplanet Biosignatures: Future Directions [PDF]
Astrobiology, 2018 125 pages (double spaced), 12 figures; The paper is the fourth in a series of 5 review manuscripts of the NExSS Exoplanet Biosignatures Workshop.
Walker, Sara I. +13 more
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Taphonomy of Biosignatures in Microbial Mats on Little Ambergris Cay, Turks and Caicos Islands
Frontiers in Earth Science, 2020 Microbial mats are taxonomically and metabolically diverse microbial ecosystems, with a characteristic layering that reflects vertical gradients in light and oxygen availability.
Maya L. Gomes +9 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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Ratiometric glucose sensing based on fluorescent oxygen films and glucose oxidase
Sensing and Bio-Sensing Research, 2017 A new two-layer sensor film was constructed for sensing glucose based on glucose oxidase and oxygen sensing material. The first layer of film containing the oxygen sensor and intra-reference material was polymerized, then the second layer of glucose ...
Fengyu Su +5 more
doaj +1 more source
Metalliferous Biosignatures for Deep Subsurface Microbial Activity [PDF]
, 2015 Acknowledgments We thank the British Geological Survey (BGS) for the provision of samples and the Science & Technology Facilities Council (STFC) grant (ST/L001233/1) for PhD funding which aided this project.
Bowden, Stephen +3 more
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Formalising the Pathways to Life Using Assembly Spaces
Entropy, 2022 Assembly theory (referred to in prior works as pathway assembly) has been developed to explore the extrinsic information required to distinguish a given object from a random ensemble. In prior work, we explored the key concepts relating to deconstructing
Stuart M. Marshall +4 more
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ATLAST detector needs for direct spectroscopic biosignature characterization in the visible and near-IR [PDF]
, 2015 Are we alone? Answering this ageless question will be a major focus for astrophysics in coming decades. Our tools will include unprecedentedly large UV-Optical-IR space telescopes working with advanced coronagraphs and starshades.
Bolcar, Matthew R. +8 more
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SEMIOTICS OF BIOSIGNATURES [PDF]
Southern Semiotic Review, 2018 This article examines the interpretation of biosignatures, the signs of life that could bedetected in outer space. In astrobiology biosignatures could be of various kinds, fossils, molecules, traces, artefacts, structures, electromagnetic waves, etc.
openaire +2 more sources