Biosignatures - Open Access .click

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Life on the Edge: Using Planetary Context to Enhance Biosignatures and Avoid False Positives [PDF]

arXiv
We use a probability theory framework to discuss the search for biosignatures. This perspective allows us to analyse the potential for different biosignatures to provide convincing evidence of extraterrestrial life and to formalise frameworks for accumulating evidence.
arxiv

Endometriosis Gene Expression Heterogeneity and Biosignature: A Phylogenetic Analysis [PDF]

, 2011
Mones Abu‐Asab +4 more
openalex +1 more source

Tracking the record of early life

Carnets de Géologie, 2005
Life may have been present on Earth from about 3.8 Ga or earlier. Based on a combination of geochemical, morphological and sedimentological evidence, the early biosphere included a wide diversity of prokaryotes exhibiting modern metabolisms that thrived ...
Marshall Craig P., Javaux Emmanuelle J.
doaj

Metabolic Processes Preserved as Biosignatures in Iron-Oxidizing Microorganisms: Implications for Biosignature Detection on Mars [PDF]

Iron-oxidizing bacteria occupy a distinct environmental niche. These chemolithoautotrophic organisms require very little oxygen (when neutrophilic) or outcompete oxygen for access to Fe(II) (when acidophilic).
Emerson, David +3 more
core +1 more source

Hexagonal Platelet-like Magnetite as a Biosignature of Thermophilic Iron-Reducing Bacteria and Its Applications to the Exploration of the Modern Deep, Hot Biosphere and the Emergence of Iron-Reducing Bacteria in Early Precambrian Oceans [PDF]

, 2012
Yiliang Li
openalex +1 more source

Effects of Aerial Exposure on Preservation of Low-Temperature Calothrix Biosignatures in Silica Sinter from Queen's Laundry, Yellowstone National Park, USA

, 2000
Shana L. Kendall
openalex +2 more sources

Focusing the Search for Biosignatures on Mars: Facies Prediction with an Example from Acidalia Planitia [PDF]

, 2012
Dorothy Z. Oehler, Carlton C. Allen
openalex +1 more source

Faculty Opinions recommendation of Magnetofossils from ancient Mars: a robust biosignature in the martian meteorite ALH84001.

, 2002
John C. Priscu
openalex +2 more sources

The persistence of a chlorophyll spectral biosignature from Martian evaporite and spring analogues under Mars-like conditions [PDF]