Results 41 to 50 of about 1,723 (170)
mSystems, 2021 In recent years, our appreciation of the extent of habitable environments in Earth’s subsurface has greatly expanded, as has our understanding of the biodiversity contained within.
Lindsay I. Putman +7 more
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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 +5 more
wiley +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
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Journal of Geophysical Research: Atmospheres, Volume 131, Issue 13, 16 July 2026.Abstract Photosynthetic eukaryotic algae survived the Neoproterozoic Snowball Earth events, indicating that liquid‐water refugia existed somewhere on the surface. We examine the potential for refugia at the coldest time of a snowball event, before CO2 had risen and with high‐albedo ice on the frozen ocean, before it became darkened by dust deposition ...
Greta E. M. Shum +5 more
wiley +1 more source
A History of the Extraterrestrial Life Debate
Zygon, 1997 From antiquity to the present, humans have debated whether intelligent life exists elsewhere in the universe. This presentation will survey this debate, examining the roles played in it by science, religion, philosophy, and other areas of human learning.
doaj +2 more sources
Engineering Reports, Volume 8, Issue 7, July 2026.We propose the Powerful‐but‐Limited Generative AI theorem, demonstrating that embedding human‐inspired constraints, such as fixed utility functions and neuro‐symbolic submission layers, ensures generative AI remains controllable by preventing self‐improvement beyond designer intent.
Saeed Banaeian Far +3 more
wiley +1 more source
Journal of Raman Spectroscopy, Volume 57, Issue 7, Page 1150-1160, July 2026.The handheld Raman with SSE system efficiently mitigates fluorescence; however, it may also bias the Raman response towards graphitic domains in carbon‐based black pigments, thereby concealing amorphous carbon contributions that are critical for pigment type identification.
Zeynep Alp, Christoph Herm
wiley +1 more source
Life on Mars? The physiological perspective
Experimental Physiology, EarlyView.
Ronan M. G. Berg, Damian M. Bailey
wiley +1 more source
Earth and Space Science, Volume 13, Issue 7, July 2026.Abstract Mars Sample Return (MSR) is the next major frontier in Mars exploration, through which advanced laboratory instrumentation will be used to study Martian samples and answer key questions surrounding Mars' planetary evolution and astrobiology. Non‐destructive, high‐resolution imaging will be critical for preliminary MSR analyses.
Sylvia Olewinski +5 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
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