Results 41 to 50 of about 754 (168)

ASTROBIOLOGIA EM CONSONÂNCIA COM A BNCC: POSSIBILIDADES DE APLICAÇÕES NO ENSINO FUNDAMENTAL II

Caderno de Física da UEFS, 2020
O presente artigo tem como objetivo discorrer sobre a inserção da Astrobiologia na disciplina de Ciências, nas séries iniciais e finais do ensino fundamental. A Astrobiologia tem a particularidade de despertar a curiosidade e o interesse dos discentes em tentar compreender como surgiu a vida na Terra e se existe vida em outro planeta.
Marcia Nogueira Melo da Rosa, Ronaldo P. de Almeida, Iranderly Fernandes de Fernandes, Mirco Ragni   +3 more
openaire   +1 more source

Unusual occurrence of Cochlichnus in aeolian sandstones: evidence for a stiletto fly larval origin

Papers in Palaeontology, Volume 12, Issue 3, May/June 2026.
Abstract Cochlichnus anguineus is an ichnotaxon recognized for its distinctive regular wavy morphology. It is a characteristic trace fossil typically associated with aquatic and marginal aquatic environments. However, in this study we examine its unusual occurrence in the aeolian sandstones of the Botucatu Formation (Lower Cretaceous, Paraná Basin ...
Bernardo de C. P. e M. Peixoto, Gabriel E. B. de Barros, Diego Luciano Nascimento, Andrew K. Rindsberg, Gabriel Bertolini, Thândara Jacob, Renato P. Ghilardi, Marcelo A. Fernandes, Heitor R. D. Francischini   +8 more
wiley   +1 more source

The Dissipation Regime of Turbulence on Mars Observed With Microphone Data From the Mars 2020 Perseverance Rover

Geophysical Research Letters, Volume 53, Issue 8, 28 April 2026.
Abstract Turbulent winds are a regular occurrence in planetary boundary layers. Turbulence affects mixing, energy fluxes and forcing on the surface environment. Energy injected into an atmosphere generates eddies of many scales down to a size where molecular viscous forces dominate, termed the Kolmogorov length scale.
Alexander E. Stott, Naomi Murdoch, Martin Gillier, German Martinez, Tanguy Bertrand, Ralph Lorenz, Claire Newman, Ricardo Hueso, Manuel de la Torre Juárez, Donald Banfield, Sylvestre Maurice, Baptiste Chide, Jose Antonio Rodriguez Manfredi, David Mimoun   +13 more
wiley   +1 more source

Palagonitization of Volcanic Rocks in Polar Climates: The Case of Deception Island (Antarctica)

Geochemistry, Geophysics, Geosystems, Volume 26, Issue 12, December 2025.
Abstract A detailed study of palagonitization in rocks from Deception Island—one of Antarctica's most active volcanoes—has been performed to advance our understanding of this alteration process. A detailed petrographic (optical and SEM), mineralogical (XRD), and mineral and glass spot geochemistry (EDS and EMP) characterization has been conducted on ...
Oriol Vilanova‐Pagès, Guillem Gisbert, Helena Albert, Adelina Geyer, Meritxell Aulinas, Raquel Arasanz, Jordi Ibañez‐Insa, Antonio Polo‐Sánchez, Antonio Álvarez‐Valero, Olga Prieto‐Ballesteros, Santiago Giralt   +10 more
wiley   +1 more source

Abrasion Patch Dehydration Experiment at Bright Angel, Jezero Crater, Using SuperCam Onboard the Mars 2020 Perseverance Rover

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, R. C. Wiens, L. Mandon, C. C. Bedford, S. Siljeström, S. Schröder, G. M. Martínez, Á. Vicente‐Retortillo, E. A. Cloutis, D. M. Applin, A. Broz, C. Royer, J. R. Johnson, J. Van Beek, T. Nelson, E. Clavé, F. Poulet, P. Beck, E. Dehouck, T. Fornaro, T. Fouchet, A. Jones, A. Alberini, A. Cousin, K. Hand, K. Uckert, J. A. Rodríguez‐Manfredi, K. M. Stack, the Mars 2020 team   +28 more
wiley   +1 more source

Taxonomic and functional characterization of a microbial community from a volcanic englacial ecosystem in Deception Island, Antarctica

Scientific Reports, 2019
Glaciers are populated by a large number of microorganisms including bacteria, archaea and microeukaryotes. Several factors such as solar radiation, nutrient availability and water content greatly determine the diversity and abundance of these microbial ...
Emma Martinez-Alonso, Sonia Pena-Perez, Sandra Serrano, Eva Garcia-Lopez, Alberto Alcazar, Cristina Cid   +5 more
doaj   +1 more source

Determine the Elemental Composition of Minerals From Complex Solid‐Solution Series by Raman Spectroscopy: Implications for Mars Exploration Missions

Journal of Raman Spectroscopy, Volume 56, Issue 11, Page 1404-1417, November 2025.
This study presents a hierarchical Raman‐based classification model for determining the elemental composition of garnets within complex solid‐solution systems. The workflow combines spectral preprocessing, dimensionality reduction, and two‐level classification: first distinguishing between pyralspite and ugrandite groups, and then classifying ...
Sofia Julve‐Gonzalez, Jose Antonio Manrique, Marco Veneranda, Pilar Renedo, Paula Xiaozhen Vega, Iván Reyes‐Rodríguez, María Mayoral, Sergio Jiménez, Lidia Asenjo, Aurelio Sanz‐Arranz, Elena Charro Huerga, Jaime Delgado Iglesias, Olga Prieto‐Ballesteros, Andoni Moral, Emmanuel Alexis Lalla, Belen Barrios‐Areinamo, Fernando Rull, Guillermo Lopez‐Reyes   +17 more
wiley   +1 more source

Effects of Mineralogy and UV Radiation on the Detectability of Amino Acids Within the Martian Regolith: The Case for a Combined Chromatographical and Spectroscopical Approach

Journal of Geophysical Research: Planets, Volume 130, Issue 11, November 2025.
Abstract Amino acids are an extremely heterogeneous group of biomolecules essential for life on Earth. Their biosignatures are expected to be easily degraded on the Martian surface as the absence of a thick atmosphere and a magnetosphere leads to most of the solar radiation directly reaching its surface.
Miguel Arribas Tiemblo, Pedro Rayo, María‐Paz Martín‐Redondo, Felipe Gómez   +3 more
wiley   +1 more source

Dust, Sand, and Winds Within an Active Martian Storm in Jezero Crater

Geophysical Research Letters, 2022
Rovers and landers on Mars have experienced local, regional, and planetary‐scale dust storms. However, in situ documentation of active lifting within storms has remained elusive.
M. T. Lemmon, M. D. Smith, D. Viudez‐Moreiras, M. de laTorre‐Juarez, A. Vicente‐Retortillo, A. Munguira, A. Sanchez‐Lavega, R. Hueso, G. Martinez, B. Chide, R. Sullivan, D. Toledo, L. Tamppari, T. Bertrand, J. F. Bell III, C. Newman, M. Baker, D. Banfield, J. A. Rodriguez‐Manfredi, J. N. Maki, V. Apestigue   +20 more
doaj   +1 more source

COMPREENDENDO A FORMAÇÃO DE NANOESTRUTURAS EM GELO ASTROFÍSICOS ATRAVÉS DA DINÂMICA MOLECULAR CLÁSSICA

Revista UniVap, 2023
Gelos astrofísicos (formados pela água, entre outras moléculas) atuam como um catalisador e um reservatório de espécies carbonáceas, ambas com grandes implicações para a astrobiologia.
Priscila Alves da Silva, Sergio Pilling Guapyassu de Oliveira, Rodrigo Garcia Amarim   +2 more
doaj   +1 more source