Results 61 to 70 of about 1,909 (161)
Journal of Geophysical Research: Planets, Volume 130, Issue 2, February 2025.Abstract The Perseverance rover has sampled mm‐size lithic fragments containing olivine likely from at least two source regions from the surface of an inactive megaripple surface, and fine‐grained material from the surface and to a depth of ∼4–6 cm. Some of the mm‐size grains lack a coherent diffraction pattern measured by PIXL, consistent with the ...
E. M. Hausrath +66 more
wiley +1 more source
Isotopic signatures of extinct low-temperature hydrothermal chimneys in the Jaroso Mars analog
, 2007 8 pages, 5 figures.-- ISI Article Identifier: 000244984600006.-- Available online Nov 15, 2006.The present work presents a geochemical study, focused on the oxygen and carbon isotopic signatures of shallow-marine, carbonate extinct chimneys, from Jaroso ...
Reyes, Emilio +9 more
core +2 more sources
Journal of Geophysical Research: Planets, Volume 130, Issue 2, February 2025.Abstract Wind measurements from landed missions on Mars are vital to characterize the near surface atmospheric behavior on Mars and improve atmospheric models. These winds are responsible for aeolian change and the mixing of dust in and out of the atmosphere, which has a significant effect on global circulation.
Alexander E. Stott +14 more
wiley +1 more source
Astronomy & AstrophysicsContext. Tracing the origin of the gas emission lines in galaxies can prove challenging in certain cases. Buried active galactic nuclei (AGNs) and obscured young stellar clusters pose significant obstacles with respect to traditional optical diagnostic ...
Costa-Souza José Henrique +8 more
doaj +1 more source
Journal of Geophysical Research: Planets, Volume 130, Issue 2, February 2025.Abstract We investigate Gravity Waves (GWs) in the lower atmosphere of Mars based on pressure timeseries acquired by the InSight lander. We compile a climatology showing that most GW activity detected at the InSight landing site takes place after the sunrise and sunset; they are almost absent during the aphelion season, and more prominent around the ...
J. Hernández‐Bernal +4 more
wiley +1 more source
Prebiotic microreactors: A synthesis of purines and dihydroxy compounds in aqueous aerosol
, 2007 20 pages, 9 figures, 3 tables, 1 appendix.-- Published online: 29 Nov. 2006.We report the synthesis of purine bases and other heterocycles and the formation of amino acids, hydroxy acids and dihydroxy compounds by the spark activation of an atmosphere of
Osuna-Esteban, Susana +3 more
core +1 more source
Journal of Geophysical Research: Planets, Volume 130, Issue 1, January 2025.Abstract We present a study of atmospheric disturbances at Jezero Crater, Mars, using ground‐based measurements of surface pressure by the Perseverance rover in combination with orbital images from the Mars Express and Mars Reconnaissance Orbiter missions.
A. Sánchez‐Lavega +15 more
wiley +1 more source
HISTORIA Y NATURALEZA DISCIPLINAR DE LA ASTROBIOLOGÍA
, 2017 La astrobiología es una ciencia que se ha ido perfilándose dentro de la variedad de ciencias a partir de mediados de los años 90’. La astrobiología es el estudio, entre otros temas, del pasado, presente y futuro de la vida en la Tierra y en el universo.
Octavio Alfonso Chon
core
Astronomía y Astrobiología con internet : recursos informáticos y material multimedia interactivo [PDF]
, 2006 El artículo de Francisco José Ruiz Rey presenta información sobre diversos recursos didácticos de Astronomía y Astrobiología disponibles en Internet. Previamente, el autor hace una reflexión sobre Internet como un elemento que favorece el aprendizaje ...
Ruiz Rey, Francisco José
core
Síntesis y caracterización espectroscópica de sulfatos de hierro: implicaciones en astrobiología y la exploración de Marte [PDF]
, 2015 Hay una serie de aspectos que fundamentan la necesidad y el interés de las investigaciones que en este proyecto de tesis se recogen. Por un lado, el interés por los sulfatos de hierro.
Sansano Caramazana, Antonio
core +1 more source