Results 81 to 90 of about 4,760 (150)

Interpretable Machine Learning Biosignature Detection From Ocean Worlds Analogue CO2 Isotopologue Data

Earth and Space Science
Future missions to icy ocean worlds (OW) such as Europa and Enceladus will evaluate the habitability and potential for biosignatures on these worlds. These missions will benefit from autonomous science and machine learning (ML) methods to process high ...
Lily A. Clough, Victoria DaPoian, Jonathan D. Major, Lauren M. Seyler, Brett A. McKinney, Bethany P. Theiling   +5 more
doaj   +1 more source

Soil Systems as Astrobiological Models: Microbial Communities, Environmental Stressors, and Planetary Analogues

Soil Systems
Soils are complex, heterogeneous systems that link terrestrial ecology and astrobiology. Microbial persistence in these systems reflects not only intrinsic cellular resistance but also interactions among organisms, mineral components, organic matter, and
Vladimir Cheptsov, Andrey Belov, Ivan Kozlov   +2 more
doaj   +1 more source

Intracellular biomineralization in bacteria

Frontiers in Microbiology, 2014
Wei eLin, Wei eLin, Karim eBenzerara, Damien eFaivre, Yongxin ePan, Yongxin ePan   +5 more
doaj   +1 more source

A novel blood-based epigenetic biosignature in first-episode schizophrenia patients through automated machine learning

Translational Psychiatry
Schizophrenia (SCZ) is a chronic, severe, and complex psychiatric disorder that affects all aspects of personal functioning. While SCZ has a very strong biological component, there are still no objective diagnostic tests.
Makrina Karaglani, Agorastos Agorastos, Maria Panagopoulou, Eleni Parlapani, Panagiotis Athanasis, Panagiotis Bitsios, Konstantina Tzitzikou, Theodosis Theodosiou, Ioannis Iliopoulos, Vasilios-Panteleimon Bozikas, Ekaterini Chatzaki   +10 more
doaj   +1 more source

Biosignatures of an ancient bedrock- and impact structure-hosted deep biosphere: current knowledge and future perspectives

Discover Geoscience
The deep biosphere is thought to have dominated life on Earth for most of its history and played a crucial role in the early evolution of both prokaryotes and eukaryotes.
Jacob Gustafsson, Henrik Drake
doaj   +1 more source

There’s More to Life in Reflected Light: Simulating the Detectability of a Range of Molecules for High-contrast, High-resolution Observations of Nontransiting Terrestrial Exoplanets

The Planetary Science Journal
The upcoming extremely large telescopes (ELTs) will provide the first opportunity to search for signs of habitability and life on nontransiting terrestrial exoplanets using high-contrast, high-resolution instrumentation. However, the suite of atmospheric
Miles H. Currie, Victoria S. Meadows
doaj   +1 more source

An Agnostic Biosignature Based on Modeling Panspermia and Terraformation [PDF]

A fundamental goal of astrobiology is to detect life outside of Earth. This proves to be an exceptional challenge outside of our solar system, where strong assumptions must be made about how life would manifest and interact with its planet.
Smith, Harrison B., Sinapayen, Lana
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Bioverse: Potentially Observable Exoplanet Biosignature Patterns under the UV Threshold Hypothesis for the Origin of Life

The Astrophysical Journal
A wide variety of scenarios for the origin of life have been proposed, with many influencing the prevalence and distribution of biosignatures across exoplanet populations.
Martin Schlecker, Dániel Apai, Antonin Affholder, Sukrit Ranjan, Régis Ferrière, Kevin K. Hardegree-Ullman, Tim Lichtenberg, Stéphane Mazevet   +7 more
doaj   +1 more source

A Complex Systems Approach to Exoplanet Atmospheric Chemistry: New Prospects for Ruling Out the Possibility of Alien Life As We Know It

The Planetary Science Journal
The near-term ability to characterize terrestrial exoplanet atmospheres may bring us closer to discovering alien life through atmospheric data. However, remotely detectable candidate biosignature gases are subject to false-positive signals because they ...
Theresa Fisher, Estelle Janin, Sara Imari Walker   +2 more
doaj   +1 more source

Preservation of Biosignature Molecules in Potential Sample Return Container of the Mars 2020 Mission [PDF]

, 2013
Preservation of Biosignature Molecules in Potential Sample Return Container of the Mars 2020 Mission Kimberly Lykens1 and Fei Chen2 1Wittenberg University, Springfield, Ohio 45501 2Jet Propulsion Laboratory, Pasadena, California, 91109 One ...
Lykens, Kimberly E, Chen, Fei, Ph.D
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