Results 61 to 70 of about 2,729 (209)

L’exobiologie, l’imaginaire et le symbolique

Cahiers François Viète, 2003
This text puts forward the idea that the commentaries in natural language that necessarily accompany the experimental activities of exobiology (laboratory experiments, space missions, astronomical observations, etc.) inevitably belong to the novel.
Jean Schneider
doaj   +1 more source

Reconstructing Europa's Atmosphere From H2+ ${\mathbf{H}}_{\mathbf{2}}^{+}$ Pickup Ions Detected During the Juno PJ45 Flyby

Journal of Geophysical Research: Planets, Volume 131, Issue 8, August 2026.
Abstract We use a suite of single‐species (H2 ${\mathrm{H}}_{2}$) and multispecies (H2+O2+H+O ${\mathrm{H}}_{2}+{\mathrm{O}}_{2}+\mathrm{H}+\mathrm{O}$) Direct Simulation Monte Carlo models of Europa's atmosphere to interpret the H2+ ${\mathrm{H}}_{2}^{+}$ pickup ions detected by Juno at distances beyond 2 $2$ Europa radii RE $\left({R}_{E}\right ...
Shane R. Carberry Mogan, Andrew R. Poppe, Lucas Liuzzo, Jamey R. Szalay, Sean P. Ellis, Robert E. Johnson, Lorenz Roth   +6 more
wiley   +1 more source

Nanoscale investigations of complex microbial interactions with terrestrial and extraterrestrial minerals using STEM based approach: implications for life on Earth and beyond

Frontiers in Environmental Chemistry
Our recent investigations using scanning transmission electron microscopy (STEM) based approach address tungsten-microbial interactions as a microbial strategy to withstand harsh environments, microbial metal extraction capacities for bioleaching ...
Tetyana Milojevic, Mihaela Albu, Ilse Letofsky-Papst, Artem Mashchenko   +3 more
doaj   +1 more source

About the presence of arsenic in prebiotic species

BIO Web of Conferences, 2014
The recent publication that some bacteria could use arsenic instead of phosphorus for building their DNA triggered a large controversy in the astro/exobiology community. Most comments claim that such a substitution is not possible.
Ellinger Y., Toulouze M., Pilmé J., Pauzat F.   +3 more
doaj   +1 more source

Emerging Priorities for Microbiome Research

Frontiers in Microbiology, 2020
Microbiome research has increased dramatically in recent years, driven by advances in technology and significant reductions in the cost of analysis. Such research has unlocked a wealth of data, which has yielded tremendous insight into the nature of the ...
Chad M. Cullen, Kawalpreet K. Aneja, Sinem Beyhan, Clara E. Cho, Stephen Woloszynek, Stephen Woloszynek, Matteo Convertino, Sophie J. McCoy, Yanyan Zhang, Matthew Z. Anderson, Matthew Z. Anderson, David Alvarez-Ponce, Ekaterina Smirnova, Lisa Karstens, Lisa Karstens, Pieter C. Dorrestein, Hongzhe Li, Ananya Sen Gupta, Kevin Cheung, Jennifer Gloeckner Powers, Zhengqiao Zhao, Gail L. Rosen, Gail L. Rosen   +22 more
doaj   +1 more source

Mars Alteration on Earth: A Spectroscopic Study of Hydrated Silica and Biomarker Preservation in La Palma Lava Tubes

Journal of Geophysical Research: Planets, Volume 131, Issue 8, August 2026.
Abstract Volcanic tubes provide stable environments where unique mineralogical assemblages can form and be preserved, making them valuable terrestrial analogs for Martian studies. This work investigates tree‐like structures within two lava tubes on La Palma Island (Canary Islands, Spain) through a comprehensive geochemical and mineralogical ...
F. Alberquilla, J. Aramendia, I. Martínez‐Arkarazo, G. Gorla, L. Coloma, G. Arana, A. Gonzalez, R. Gisbert, P. Cobiella, M. Perestelo, J. M. Madariaga   +10 more
wiley   +1 more source

Exobiology experiment concepts for Space Station [PDF]

, 1986
The exobiology discipline uses ground based and space flight resources to conduct a multidiscipline research effort dedicated to understanding fundamental questions about the origin, evolution, and distribution of life and life related molecules ...
Griffiths, L. D., Devincenzi, D. L., Griffiths, Lynn D., Devincenzi, Donald L.   +3 more
core  

Sedimentology of silica granules and haematite in the 3.47 Ga Antarctic Creek Member, Mount Ada Basalt, Western Australia

Sedimentology, Volume 73, Issue 5, Page 1842-1866, August 2026.
ABSTRACT The Paleoarchean Antarctic Creek Member of the Mount Ada Basalt, Eastern Pilbara Terrane, Western Australia, includes beds of jasper and white chert composed of sand‐sized silica granules that often contain or are mixed with silt‐sized particles of haematite.
Donald R. Lowe, Gary R. Byerly
wiley   +1 more source

Publications of the exobiology program for 1983: A special bibliography [PDF]

, 1984
A list of 1983 publications resulting from research pursued under the auspices of NASA's Exobiology Program is given. Topics in the fields of biological, chemical, and planetary evolution; geochemistry; and intelligent extraterrestrial life are ...
Pleasant, L. G., Devincenzi, D. L.
core  

Oxidation of Aqueous Sulfide by Chlorate: Implications for Native Sulfur Formation on Mars

Geophysical Research Letters, Volume 53, Issue 14, 28 July 2026.
Abstract The recent discovery of native sulfur (“sulfur stones” consist of elemental sulfur) by Curiosity rover in the Gale Crater has sparked considerable research interest toward identifying its formation mechanisms that could generate novel insights into Martian sulfur cycling.
J. Wang, S. Kim, Z. Gold, R. L. Cheng, C. Muñoz‐Saez, N. M. Fernandez   +5 more
wiley   +1 more source