Biosignatures Search in Habitable Planets [PDF]
Galaxies, 2019 The search for life has had a new enthusiastic restart in the last two decades thanks to the large number of new worlds discovered. The about 4100 exoplanets found so far, show a large diversity of planets, from hot giants to rocky planets orbiting small
Riccardo Claudi, Eleonora Alei
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Multi-technique characterization of iron reduction by an Antarctic Shewanella: an analog system for putative Martian biosignature identification [PDF]
Applied and Environmental MicrobiologyMicrobes from terrestrial extreme environments enable testing of biosignature production in conditions relevant to astrobiological targets. Mars, which was likely more conducive to life during early warmer and wetter epochs, has inspired missions that ...
Jacob M. C. Shaffer +9 more
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Energy-ordered resource stratification as an agnostic signature of life [PDF]
Nature CommunicationsThe search for extraterrestrial life hinges on identifying biosignatures, often focusing on gaseous metabolic byproducts as indicators. However, most such biosignatures require assuming specific metabolic processes.
Akshit Goyal, Mikhail Tikhonov
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The Oxygen Release Instrument: Space Mission Reactive Oxygen Species Measurements for Habitability Characterization, Biosignature Preservation Potential Assessment, and Evaluation of Human Health Hazards [PDF]
Life, 2019 We describe the design of an instrument, the OxR (for Oxygen Release), for the enzymatically specific and non-enzymatic detection and quantification of the reactive oxidant species (ROS), superoxide radicals (O2•−), and peroxides (O22−,
Christos D. Georgiou +5 more
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Network-based integrative multi-omics approach reveals biosignatures specific to COVID-19 disease phases [PDF]
Frontiers in Molecular BiosciencesBackgroundCOVID-19 disease is characterized by a spectrum of disease phases (mild, moderate, and severe). Each disease phase is marked by changes in omics profiles with corresponding changes in the expression of features (biosignatures).
Francis E. Agamah +5 more
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An astrobiological perspective on microbial biofilms: their importance for habitability and production of detectable and lasting biosignatures [PDF]
Applied and Environmental MicrobiologyThe search for life elsewhere in the universe has remained one of the main goals of astrobiological exploration. In this quest, extreme environments on Earth have served as analogs to study the potential habitability of Mars and icy moons, which include ...
Sarah Gonzalez-Henao, Matthew O. Schrenk
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Exploring Life Detection on Mars: Understanding Challenges in DNA Amplification in Martian Regolith Analogue After Fe Ion Irradiation [PDF]
LifeThe search for life beyond Earth currently hinges on the detection of biosignatures that are indicative of current or past life, with terrestrial life being the sole known example.
Alessia Cassaro +2 more
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Biological, Equilibrium and Photochemical Signatures of C, N and S Isotopes in the Early Earth and Exoplanet Atmospheres [PDF]
LifeThe unambiguous detection of biosignatures in exoplanet atmospheres is a primary objective for astrobiologists and exoplanet astronomers. The primary methodology is the observation of combinations of gases considered unlikely to coexist in an atmosphere ...
James R. Lyons
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Comparing biosignatures in aged basalt glass from North Pond, Mid-Atlantic Ridge and the Louisville Seamount Trail, off New Zealand. [PDF]
PLoS ONE, 2018 Microbial life can leave various traces (or biosignatures) in rocks, including biotic alteration textures, biominerals, enrichments of certain elements, organic molecules, or remnants of DNA.
Andreas Türke +2 more
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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
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