Results 41 to 50 of about 5,500 (246)

Exobiology issues and experiments at a Mars base [PDF]

, 1986
Research in Exobiology, the study of the origin, evolution, and distribution of life in the universe, may be a major component of the science activities at a Mars Base.
Christopher P. McKay
openalex   +2 more sources

Early Technology Readiness Level (TRL) Development of the Microfluidic Inorganic Conductivity Detector for Europa and the Solenoid-Based Actuator Assembly for Impact Penetrators

Sensors
This 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, Mohamed Odeh, Cambrie Salyards, Amanda Stockton   +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

A critical role of heterotrophic bacteria in early diagenesis of carbonates through exopolymer degradation and calcium release

The Depositional Record, Volume 12, Issue 1, February 2026.
Exopolymeric substances (EPS) produced in the photic zone and surface sediments sequester calcium. Below the sediment surface, heterotrophic bacteria degrade EPS, releasing calcium resulting in carbonate precipitation. This process, which continues for millennia deep in the core, is an important sink for atmospheric carbon dioxide.
Pieter T. Visscher, Pierre Boussagol, Raphael Bourillot, Christophe Dupraz, Olivier Braissant, Alan W. Decho, Brendan P. Burns, Richard Allen White III, Paxton Tomko, Emmanuelle Vennin   +9 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, J. Clemmet, M. Croon, M. R. Sims, D. Pullan, J.-P. Muller, Y. Tao, S. Xiong, A. R. Putri, T. Parker, S. M. R. Turner, J. M. Pillinger   +11 more
doaj   +1 more source

Mountain Waves and Thermal Tides of the Venusian Atmosphere Analyzed Through Thermal Infrared Images and Radio Occultation

Journal of Geophysical Research: Planets, Volume 131, Issue 1, January 2026.
Abstract Thermal infrared imaging by Longwave Infrared Camera (LIR) aboard JAXA's Venus orbiter Akatsuki has revealed horizontal structures of large‐scale topographic gravity waves (mountain waves) and thermal tides in the Venusian atmosphere. For quantitative analysis of these waves, we developed a radiative transfer model for an atmosphere perturbed ...
Z. Guo, T. Imamura, T. M. Sato, H. Ando, T. Kouyama, M. Taguchi   +5 more
wiley   +1 more source

“Salt Tectonics” on Titan: Radial Labyrinths as Topographic Expressions of Solid‐State Flow

Journal of Geophysical Research: Planets, Volume 131, Issue 1, January 2026.
Abstract Surface observations of Saturn's moon Titan revealed features characterized as dissected, elevated plateaus with high valley density known as labyrinth terrains. Of this terrain class, a subtype referred to as radial labyrinth is described as dome‐shaped uplifts with radial channel patterns.
Ashley M. Schoenfeld, Steven D. Vance, Rosaly M. C. Lopes, Michael J. Malaska, Michael Bland   +4 more
wiley   +1 more source

Structure of Jupiter's High‐Latitude Storms: Folded Filamentary Regions Revealed by Juno

Journal of Geophysical Research: Planets, Volume 131, Issue 1, January 2026.
Abstract Sprawling, turbulent cloud formations dominate the meteorology of Jupiter's mid‐to‐high latitudes, known as Folded Filamentary Regions (FFRs). A multi‐wavelength characterization by Juno reveals the spatial distribution, vertical structure, and energetics of the FFRs.
L. N. Fletcher, Z. Zhang, S. Brown, F. A. Oyafuso, J. H. Rogers, M. H. Wong, A. Mura, G. Eichstädt, G. S. Orton, S. Brueshaber, R. Sankar, C. Li, S. M. Levin, F. Biagiotti, T. Guillot, A. P. Ingersoll, D. Grassi, C. J. Hansen, S. Bolton, J. H. Waite   +19 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

Short‐Term Effect of Mars‐Like Radiation on Carbon and Oxygen Isotope Compositions of Carbonates

Journal of Geophysical Research: Planets, Volume 131, Issue 1, January 2026.
Abstract The stable isotope composition of carbonates records the environmental formation conditions and can indicate potential biosignatures if formed biologically. Martian meteorite carbonates display unusually high δ13C values, not explained using known terrestrial processes.
Nicolas Randazzo, Sang‐Tae Kim, Fabien Stalport, Maikel C. Rheinstäder, Hervé Cottin, Patrice Coll   +5 more
wiley   +1 more source