Results 91 to 100 of about 992,600 (206)

Nature, origin, and phosphorylation potential of the phosphorus/sulfur‐bearing nanoscale multiphasic assemblages in the CM chondrites Murchison and Murray

Meteoritics &Planetary Science, Volume 61, Issue 9, Page 2303-2335, September 2026.
Abstract Carbonaceous chondrites contain phosphorus, whose speciation and thus history remain to be investigated. Phosphorus/sulfur‐bearing assemblages have been reported in carbonaceous CM chondrites, but there is no consensus about their exact compositions and origins.
Valentine Megevand, Sylvain Bernard, Corentin Le Guillou, Roberto Conconi, François Guyot   +4 more
wiley   +1 more source

Modeling Linear Polarization of the Didymos–Dimorphos System before and after the DART Impact

The Planetary Science Journal
We analyze the polarization observations of the Didymos–Dimorphos system before and after the impact by the NASA Double Asteroid Redirection Test spacecraft on Dimorphos.
Antti Penttilä, Karri Muinonen, Mikael Granvik, Zuri Gray, Stefano Bagnulo, Ludmilla Kolokolova, Fernando Moreno   +6 more
doaj   +1 more source

The first discovery of a shocked, metasomatised CV3 chondrule‐fragment in a (Al,Cu)‐bearing micrometeorite

Meteoritics &Planetary Science, Volume 61, Issue 9, Page 2269-2283, September 2026.
Abstract We report the discovery of the second (Al,Cu)‐alloy–bearing micrometeorite, FB‐A2, recovered from Mount Gariglione (southern Italy), representing the sixth such occurrence worldwide. Although chondritic in nature, FB‐A2 differs markedly from previously described microspherules.
Giovanna Agrosì, Paola Manzari, Daniela Mele, Johan Villeneuve, Tiziano Catelani, Mattew J. Genge, Luca Bindi   +6 more
wiley   +1 more source

Detection of a 2.85 μm Feature on Five Spinel-rich Asteroids from JWST

The Astrophysical Journal Letters
Ground-based observations of “Barbarian” L-type asteroids at 1–2.5 μ m indicate that their near-infrared spectra are dominated by the mineral spinel, which has been attributed to a high abundance of calcium-aluminum inclusions (CAIs)—the first solids to ...
Jonathan Gomez Barrientos, Katherine de Kleer, Bethany L. Ehlmann, Francois L. H. Tissot, Jessica Mueller   +4 more
doaj   +1 more source

Asteroid-GS: 3D Gaussian splatting for fast surface reconstruction of asteroids

Astronomy & Astrophysics
Context. Asteroid surface reconstruction is essential for deep space exploration missions, as it provides critical information about surface morphology that supports spacecraft navigation and sample acquisition. Traditional methods, such as stereo-photogrammetry (SPG) and stereo-photoclinometry (SPC), have been ...
Xiaojie Zhang, Linyan Cui, Xiaodong Wei, Yicong Chen   +3 more
openaire   +1 more source

When Communication Enables Catastrophe: Nuclear Risk and the Short Lifetimes of Technological Civilizations

Risk Analysis, Volume 46, Issue 9, September 2026.
ABSTRACT The Fermi paradox may partly reflect technological self‐destruction acting as a Great Filter during post‐industrial development. Because the empirical record consists of a single civilization observed over an eighty‐year nuclear age, the exercise reported here is best understood as a structured, historically anchored scenario analysis rather ...
Vincenzo Alfano
wiley   +1 more source

Mid-infrared Measurements of Ion-irradiated Carbonaceous Meteorites: How to Better Detect Space Weathering Effects

The Planetary Science Journal
Remote sensing study of asteroids will soon enter a new era with an increasing amount of data available thanks to the JWST, especially in the mid-infrared (MIR) range that allows identification of mineral species.
C. Lantz, T. Nakamura, D. Baklouti, R. Brunetto, E. Henault, S. Kobayashi, O. Mivumbi, Z. Djouadi, E. Quirico, M. Zolensky, T. Hiroi   +10 more
doaj   +1 more source

Asteroid-NeRF: A deep-learning method for 3D surface reconstruction of asteroids

Astronomy & Astrophysics
Context. Asteroids preserve important information about the origin and evolution of the Solar System. Three-dimensional (3D) surface models of asteroids are essential for exploration missions and scientific research. Regular methods for 3D surface reconstruction of asteroids, such as stereo-photogrammetry (SPG), usually struggle to reconstruct ...
Shihan Chen, Bo Wu, Hongliang Li, Zhaojin Li, Yi Liu   +4 more
openaire   +1 more source

Zygomatic Sialadenitis as a Rare Cause of Exophthalmos in a Dog

Veterinary Ophthalmology, Volume 29, Issue 5, September 2026.
ABSTRACT Objective To describe the clinical presentation, diagnostic findings, and surgical management of zygomatic sialadenitis associated with retrobulbar disease in a dog following extensive dental extractions. Animals Studied A 10‐year‐old spayed female Cavalier King Charles Spaniel.
Katrina E. V. Jones, Manabu Kurihara, Hans D. Westermeyer, Danielle Meritet   +3 more
wiley   +1 more source

Evaluation of simulated space weathering-based meteorite alteration and potential influence on mechanical deformation of rubble pile asteroids

Frontiers in Astronomy and Space Sciences
Asteroids with the potential to impact Earth have become a significant focus of scientific research and applied space technology. These bodies are expected to be key targets for mitigation actions and space mining activities in the coming decades ...
A. Kereszturi, A. Kereszturi, I. Gyollai, I. Gyollai, S. Biri, Z. Juhász, Cs. Király, Cs. Király, B. D. Pál, B. D. Pál, R. Rácz, D. Rezes, D. Rezes, B. Sulik, M. Szabó, M. Szabó, Z. Szalai, Z. Szalai, Z. Szalai, P. Szávai, P. Szávai   +20 more
doaj   +1 more source