Results 121 to 130 of about 2,410,397 (202)

Fifty Years Later: Revisiting Viking 2 Seismic Signals Through InSight

AGU Advances, Volume 7, Issue 7, October 2026.
Abstract For nearly 50 years, the origin of the candidate seismic signals recorded by Viking 2 remained unresolved because of limited instrumental sensitivity, onboard observation, data compression, and the absence of Martian seismic context. Here we reconstruct the Viking seismic workflow and reinterpret the two Viking candidate events, recorded on ...
Wanbo Xiao, Jiaqi Li, Yanbin Wang, Andrew Lazarewicz   +3 more
wiley   +1 more source

Quantifying the High Early Solar Cosmic-Ray Flux with Cosmogenic Neon Isotopes in Refractory Minerals

The Astrophysical Journal
An enhancement in the activity of the early young Sun resulting in a high charged particle flux has been invoked to explain excesses in spallation-induced nuclides in primitive planetary materials.
Xin Yang, Fred J. Ciesla, Philipp R. Heck   +2 more
doaj   +1 more source

XRD, SEM and petrologic characterization of a L4-L5 ordinary chondrite meteorite

, 2012
In this work, a meteorite sample recovered in Morocco is characterized by detailed petrographic observations in transmitted and reflected light optical microscopy and by using XRD and SEM and it is tentatively classified. VIS/NIR spectral analysis of the
Salgueiro da Silva, M. A., Silva, M. A. S., Seixas, T. M., Lopes, A. B., Almeida, B., Santos, J. F., Vieira, J. M., Seixas, Teresa M., Almeida, F., Diogo, Z., Mendes, M. H.   +10 more
core   +1 more source

Subseafloor Temperature Variability During Ridge‐Flank Hydrothermal Circulation: Implications for a Moderate‐Temperature Earth System and Other Ocean Worlds

Geochemistry, Geophysics, Geosystems, Volume 27, Issue 10, October 2026.
Abstract Subseafloor hydrothermal circulation drives biogeochemical exchange between the solid Earth and its ocean, and could play a similar role in other ocean worlds. We assess the scale of subseafloor temperature (T) variations during hydrothermal circulation in ∼3.5 Ma seafloor on the eastern flank of Juan de Fuca Ridge. This well‐studied, moderate
Donna K. Blackman, Kirt Robinson, Noah Randolph‐Flagg, Andrew T. Fisher, Julie A. Huber, Christopher R. German, Kristin L. Dickerson   +6 more
wiley   +1 more source

Europa's Neutral Sodium Exosphere Is Quasi‐Stable Over Decades

Journal of Geophysical Research: Space Physics, Volume 131, Issue 10, October 2026.
Abstract Europa's sodium cloud is thought to be modified by its orbital longitude and by its plasma environment, which modulates with Jovian magnetic geometry. To explore and quantify sodium cloud variability, seven sets of Keck I/HIRES measurements are compared providing comprehensive coverage of orbital and magnetic geometry.
Emma L. Lovett, Carl A. Schmidt, Zachariah Milby, Sean P. Ellis, Jamey R. Szalay   +4 more
wiley   +1 more source

Exploring the Neutrino Mass Hierarchy from Isotopic Ratios of Supernova Nucleosynthesis Products in Presolar Grains

The Astrophysical Journal
We study the nucleosynthesis in a core-collapse supernova (CCSN) model including newly calculated neutrino-induced reaction rates with both collective and Mikheyev–Smirnov–Wolfenstein neutrino flavor oscillations considered.
Xingqun Yao, Toshitaka Kajino, Yudong Luo, Takehito Hayakawa, Toshio Suzuki, Heamin Ko, Myung-Ki Cheoun, Seiya Hayakawa, Hidetoshi Yamaguchi, Silvio Cherubini   +9 more
doaj   +1 more source

Experimental Shock Metamorphism of Zircon, Apatite, and Whitlockite From 5 to 40 GPa

Journal of Geophysical Research: Planets, Volume 131, Issue 10, October 2026.
Abstract Hypervelocity impacts modify planetary crusts and can alter the microstructures of key minerals used to reconstruct planetary histories. We investigated the potential effects of impacts on three common accessory minerals found in terrestrial crusts by experimentally shocking zircon, apatite, and whitlockite at 5, 10, 20, and 40 GPa.
K. A. Cone, D. Trail, M. Nakajima, T. M. Erickson, G. Garapić, E. A. Bell, M. D. Mouser, M. J. Cintala, B. Zhang, T.‐W. Chen, S. Roy   +10 more
wiley   +1 more source

Wyszkow meteorite [PDF]

, 2019
The text describes the history of finding a new Polish meteorite.
Kosiński, Janusz W.
core  

Ancient Impact Melt Near the Lunar South Pole: Distribution, Provenance, and Sampling Strategy

Journal of Geophysical Research: Planets, Volume 131, Issue 10, October 2026.
Abstract Due to a lack of pre‐Nectarian samples associated with specific impacts in the Apollo suite, the early Solar System's impact chronology is poorly constrained. We investigate where Artemis and other south polar lunar missions could sample impactites to determine the ages of pre‐Nectarian craters, focusing on the ancient craters Haworth ...
J. K. Ando, A. J. Blance, É. Brassard, A. Gmerek, R. Platt, L. Galien, Z. A. Guess, A. V. Jasko, M. Simopoulou, K. Tunnell, D. A. Kring   +10 more
wiley   +1 more source

Quantitative Evaluation of Shock Metamorphism in Clinopyroxene Using In Situ X‐Ray Diffraction Measurement of Lattice Strain

Journal of Geophysical Research: Planets, Volume 131, Issue 10, October 2026.
Abstract Shock metamorphism is a ubiquitous process in our solar system. Shock pressure can be related to the lattice strain (ε) of individual minerals within a shocked sample. The lattice strain can be quantified within intact samples by in situ micro‐X‐ray diffraction (μXRD) using the Williamson‐Hall method. The Williamson‐Hall lattice strain (W‐H ε)
Laura E. Jenkins, Roberta L. Flemming, Sam Nicholson, Mark Burchell, Kathryn Harriss, Anne H. Peslier, Roy G. Christoffersen, Jörg Fritz, Cornelia Meyer   +8 more
wiley   +1 more source