Results 41 to 50 of about 2,858 (221)
Microbial mediation of textures and minerals – terrestrial or parent body processes?
Open Astronomy, 2019 Evolution of chondritic parent body is influenced by thermal, impact metamorphism and aqueous alteration, studied in Mező-Madaras, Knyahinya, Mócs and Nyírábrány in aspect of high resolution in situ textural, mineralogical and organic geochemical ...
Polgári Márta +5 more
doaj +1 more source
Establishment of the Coast Range ophiolite microbial observatory (CROMO): drilling objectives and preliminary outcomes [PDF]
Scientific Drilling, 2013 This project aimed to establish a subsurface microbial observatory in ultramafic rocks, by drilling into an actively serpentinizing peridotite body, characterizing cored rocks, and outfitting the boreholes for a program of long-term observation and ...
D. Cardace +6 more
doaj +1 more source
Sedimentology, EarlyView.ABSTRACT Thin ferruginous sandy crusts are common on top of sandstone beds in the Early Permian post‐glacial deposits of the Paraná Basin in southern Brazil. These crusts usually preserve wrinkle structures, suggesting that they might be a product of microbial mediation.
Patrícia Weschenfelder +2 more
wiley +1 more source
SensorsThis study introduces an innovative in situ lander/impact-penetrator design tailored for Discovery-class missions to Europa, specifically focused on conducting astrobiological analyses.
Chinmayee Govinda Raj +3 more
doaj +1 more source
Histoire des concepts de la vie extra-terrestre
Cahiers François Viète, 2003 Exobiology (or Bioastronomy or Astrobiology—with a few nuances) is a recent science in its own right, the result of the meeting of several disciplines (astronomy, biology, chemistry, geology, palaeontology), at the same time as the conquest of space was ...
Florence Raulin Cerceau
doaj +1 more source
Identification of the Beagle 2 lander on Mars [PDF]
Royal Society Open Science, 2017 The 2003 Beagle 2 Mars lander has been identified in Isidis Planitia at 90.43° E, 11.53° N, close to the predicted target of 90.50° E, 11.53° N. Beagle 2 was an exobiology lander designed to look for isotopic and compositional signs of life on Mars, as ...
J. C. Bridges +11 more
doaj +1 more source
Rapid Communications in Mass Spectrometry, Volume 39, Issue 23, 15 December 2025.ABSTRACT Background Obtaining isotopic data on soluble organic compounds, such as amino acids, in extraterrestrial samples is crucial for understanding their origins, prebiotic chemistry, and potential contamination. Conventional GC‐IRMS requires grams of material to measure isotopic compositions, limiting the analysis of low‐concentration organics in ...
O. M. McIntosh +9 more
wiley +1 more source
Oxychlorine Species on Mars: A Review
Reviews of Geophysics, Volume 63, Issue 4, December 2025.Abstract Oxychlorine species (mainly perchlorate and chlorate) have been identified at multiple locations on the surface of Mars by both orbiter and in situ rovers. They have also been found in martian meteorites. Cl‐isotopes in meteoritic minerals suggest that an oxychlorine cycle has been operating on the martian surface for the last ∼4 billion years.
Kaushik Mitra
wiley +1 more source
Journal of Geophysical Research: Planets, Volume 130, Issue 12, December 2025.Abstract Investigating the stability of hydrated minerals is integral for examining the preservation of rocks for potential Mars Sample Return and has major implications for models that use rover‐based observations to quantify Mars' global water budget.
S. A. Connell +28 more
wiley +1 more source
Light Regimes Shape Utilization of Extracellular Organic C and N in a Cyanobacterial Biofilm
mBio, 2016 Although it is becoming clear that many microbial primary producers can also play a role as organic consumers, we know very little about the metabolic regulation of photoautotroph organic matter consumption.
Rhona K. Stuart +10 more
doaj +1 more source