Results 51 to 60 of about 5,500 (246)
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
The New Space Race Era: The Exogeoheritage Challenge and Its Conservation
Journal of Geophysical Research: Planets, Volume 131, Issue 1, January 2026.Abstract The escalating pace of space exploration has ushered in a new era reminiscent of the space race of the 1960s. However, the discourse on exogeoconservation—the protection of geological heritage—now demands a prominent place in decision‐making processes.
B. De Toffoli
wiley +1 more source
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
Journal of Geophysical Research: Planets, Volume 131, Issue 1, January 2026.Abstract Atmospheric hydrogen chloride (HCl, or hydrochloric acid) has strong links to volcanic activity on Earth. If it is present in the atmosphere of Mars, it could hint at active magmatic processes, or the outgassing from the remnants of recently dormant volcanoes.
K. S. Olsen
wiley +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 +22 more
doaj +1 more source
Paleoceanography and Paleoclimatology, Volume 41, Issue 1, January 2026.Abstract Eccentricity cycles in deep‐sea paleoclimate records suggest that astronomical forcing notably altered global temperatures and carbon cycle dynamics. Because changes in the distribution of insolation alone cannot explain the observed climate variability, climate‐carbon cycle feedbacks must have amplified the response.
P. Vervoort +4 more
wiley +1 more source
A New Family of Planets ? "Ocean Planets"
, 2003 A new family of planets is considered which is between rochy terrestrial planets and gaseous giant ones: "Ocean-Planets". We present the possible formation, composition and internal models of these putative planets, including that of their ocean, as well
Brachet, F. +9 more
core +2 more sources
Mineral Weathering Experiments for Terrestrial Planetary Analogs in a Continuous‐Flow Reactor
Geofluids, Volume 2026, Issue 1, 2026.Understanding the groundwater environments for ancient Mars and other terrestrial bodies is of great interest for evaluating their habitability. Here, we experimentally tested simulated aqueous alterations of two Mars simulants (variants of MGS‐1) using a continuous‐flow packed bed reactor, reacting with three ionic simulated groundwater analog ...
Jessica M. Weber +7 more
wiley +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. +3 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