Results 61 to 70 of about 10,047 (199)

A Fluvio‐Lacustrine Environment Preserved in the Jezero Crater Inlet Channel, Neretva Vallis, Mars

Journal of Geophysical Research: Planets, Volume 131, Issue 1, January 2026.
Abstract Martian fluvial valleys provide evidence for the surface flow of liquid water, making them a key target for rover‐based investigations of ancient habitability. The Mars 2020 Perseverance rover spent ∼85 sols exploring the Bright Angel formation, exposed across the floor of Neretva Vallis: the western inlet channel of Jezero crater.
Alexander J. Jones, Robert Barnes, Sanjeev Gupta, Gerhard Paar, Joel Hurowitz, Brittan V. Wogsland, Adrian Broz, Hemani Kalucha, Athanasios Klidaras, Kathryn M. Stack, Patrick Russell, Briony Horgan, Bradley Garczynski, Melissa Rice, James F. Bell III, Jusin N. Maki, Svein‐Erik Hamran, Alicia Vaughan, Justin I. Simon, Oak Kanine, Stephanie A. Connell, Henry Manelski, Ashley Murphy, Olivier Beyssac, Nicolas Mangold, Olivier Gasnault, Christoph Traxler, Adrian Brown, David Flannery, Nicolas Randazzo, Jesús Martínez‐Frías, Kenneth A. Farley   +31 more
wiley   +1 more source

Detection of High‐Latitude Magnetic Reconnection Between the Northward Interplanetary Magnetic Field and a Closed Magnetic Field Wedge Linked to a Transpolar Arc

Geophysical Research Letters, Volume 52, Issue 24, 28 December 2025.
Abstract Transpolar arcs (TPAs) describe a subset of auroral emissions observed poleward of the Earth's main auroral ovals when the interplanetary magnetic field (IMF) is northward. These emissions are thought to align with a “wedge” of closed magnetic field lines extending to the high‐latitude boundary of the Earth's magnetosphere, where they are ...
Nawapat Kaweeyanun, Robert C. Fear, Betty S. Lanchester, Daniel K. Whiter, Imogen L. Gingell, Andrew N. Fazakerley, Iannis Dandouras, Stephen B. Mende, Larry J. Paxton   +8 more
wiley   +1 more source

Statistical study of foreshock cavitons [PDF]

Annales Geophysicae, 2013
In this work we perform a statistical analysis of 92 foreshock cavitons observed with the Cluster spacecraft 1 during the period 2001–2006. We analyze time intervals during which the spacecraft was located in the Earth's foreshock with durations ...
P. Kajdič, X. Blanco-Cano, N. Omidi, K. Meziane, C. T. Russell, J.-A. Sauvaud, I. Dandouras, B. Lavraud   +7 more
doaj   +1 more source

PHYSIQUE NUCLÉAIRE ET ASTROPHYSIQUE

Le Journal de Physique Colloques, 1975
La physique nucléaire des hautes et moyennes énergies peut être considérée comme un moyen d'investigation puissant du rayonnement cosmique galactique. Les noyaux du rayonnement cosmique sont en effet transformés tout au long de leur parcours dans les sources et le milieu interstellaire par réactions nucléaires de spallation ou (et) décroissance ...
openaire   +2 more sources

“Astrophysique sur Mesure”, E-learning in Astronomy and Astrophysics [PDF]

Proceedings of the International Astronomical Union, 2009
Abstract“Astrophysique sur Mesure” (astrophysics made-to-measure) is a set of e-learning programmes started 4 years ago at the Paris Observatory. In order to deliver attractive and efficient programmes, we have added many multimedia tools to usual lectures: animations, Java applets. The programmes are presented on two different platforms. The first one
Mosser, Benoît, Delsanti, Audrey, Guillaume, Damien, Balança, Christian, Balkowski, Chantal   +4 more
openaire   +2 more sources

The Moon's Crust and Upper Mantle Discontinuities Revealed by Seismic Interferometry Methods Applied to Apollo Seismic Data

Journal of Geophysical Research: Planets, Volume 130, Issue 12, December 2025.
Abstract Seismic determination of the Moon's crustal thickness is crucial for understanding its formation, composition, and evolution. Additionally, crustal thicknesses below seismic stations serve as anchoring points for 3D crustal thickness maps derived from gravity and topography field variations.
Arnau Torrent Duch, Raphael F. Garcia, Mélanie Drilleau   +2 more
wiley   +1 more source

Global gravitational instability of FLRW backgrounds - interpreting the dark sectors [PDF]

, 2011
The standard model of cosmology is based on homogeneous-isotropic solutions of Einstein's equations. These solutions are known to be gravitationally unstable to local inhomogeneous perturbations, commonly described as evolving on a background given by ...
Arrowsmith D K, Barrow J D, Buchert T, Buchert T, Buchert T, Buchert T, Buchert T, Buchert T, Carloni S, Carloni S, Carloni S, Carloni S, Ehlers J, Gasperini M, Leach J A, Marozzi G, Nathaniel Obadia, Sante Carloni, Sussman R A Izquierdo G, Thomas Buchert, Xavier Roy   +20 more
core   +7 more sources

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

South polar dynamics of the Venusian atmosphere from VIRTIS/Venus Express mapping in the thermal range [PDF]

, 2010
We report on measurements of Venus cloud velocities from VIRTIS/Venus Express observations of the south polar region of Venus. Cloud tracking has been performed using a method of automated digital correlation.
Berry, David L., Drossart, Pierre, Luz, David, Peralta, Javier, Piccioni, Giuseppe   +4 more
core  

Spectral Study of Five Major Impact Basins and Their Volcanic Infills on Mercury: A Window Into the Mantle's Properties

Journal of Geophysical Research: Planets, Volume 130, Issue 12, December 2025.
Abstract NASA's MErcury Surface, Space ENvironment, GEochemistry, and Ranging mission has revealed that about 27% of the surface of Mercury is covered by smooth plains, which are mostly volcanic in origin. These plains are mainly located in the northern hemisphere, as well as within and around major impact basins.
E. Caminiti, S. Besse, A. Doressoundiram, J. Wright   +3 more
wiley   +1 more source