Results 1 to 10 of about 307 (159)

JWST Spectroscopy of a Blue Binary Cold Classical Kuiper Belt Object

The Planetary Science Journal
We present observations of two binary systems within the cold classical region of the Kuiper Belt—2001 XR254 and 2016 BP81—obtained with the JWST Near-Infrared Spectrograph.
Ian Wong, Bryan J. Holler, Wesley C. Fraser, Michael E. Brown   +3 more
doaj   +4 more sources

Aspect Asymmetry in Martian Gullies: A Topographic Signature of Their Formation Process?

Journal of Geophysical Research: Planets, Volume 131, Issue 5, May 2026.
Abstract On Mars, erosional‐depositional landforms named gullies provide natural experiments for studying the topographic signature of the processes that act on hillslope evolution. High‐resolution topographic data were used to quantitatively compare the steepness of opposing walls in gully alcoves incised into ice‐rich slopeside mantling deposits.
A. Noblet, G. R. Osinski, S. J. Conway
wiley   +1 more source

Defining soil: Proposals of zero‐states, active layer, and págousols (from ice parent materials) to fundamentally expand soil science

Soil Science Society of America Journal, Volume 90, Issue 2, March/April 2026.
Abstract Recent publications in soil science have reopened discussions over how soil and soil science should be defined, reflecting productive tension between historical constructs and the evolving frontiers of the discipline. While new definitions offered over the past decade provide valuable perspectives, they inevitably rely on past conventions and ...
Aaron Lee M. Daigh
wiley   +1 more source

Satellites and Small Bodies With ALMA: Insights Into Solar System Formation and Evolution

AGU Advances, Volume 6, Issue 6, December 2025.
Abstract Our understanding of the formation and evolution of planetary systems has made major advances in the past decade. This progress has been driven in large part by the Atacama Large Millimeter/submillimeter Array (ALMA), which has given us an unprecedented view of solar system bodies themselves, and of the structure and chemistry of forming ...
Katherine de Kleer, Michael E. Brown, Martin Cordiner, Richard Teague   +3 more
wiley   +1 more source

Reassessing the Relationship Between Meteor Radio Afterglows and Optical Persistent Trains

Journal of Geophysical Research: Space Physics, Volume 130, Issue 9, September 2025.
Abstract Meteor radio afterglows (MRAs) and optical persistent trains (PTs) are two types of long‐lived phenomena which are occasionally observed following the occurrence of a meteor. Both phenomena are thought to be produced by intrinsic emission mechanisms; PTs have been associated with chemiluminescent reactions between meteoric metals and ...
L. E. Cordonnier, K. S. Obenberger, G. B. Taylor, J. M. Holmes, J. Dowell, D. Vida   +5 more
wiley   +1 more source

Spectral Diversity of DiSCo’s TNOs Revealed by JWST: Early Sculpting and Late Irradiation

The Astrophysical Journal Letters
The spectral diversity of trans-Neptunian objects (TNOs) is crucial for understanding the processes that led to the formation and evolution of planetesimals in the outer solar system. Using near-IR (NIR) spectra obtained by the James Webb Space Telescope
R. Brunetto, E. Hénault, S. Cryan, N. Pinilla-Alonso, J. P. Emery, A. Guilbert-Lepoutre, B. J. Holler, L. T. McClure, T. G. Müller, Y. Pendleton, A. C. de Souza-Feliciano, J. Stansberry, W. Grundy, N. Peixinho, G. Strazzulla, M. T. Bannister, D. Cruikshank, B. Harvison, J. Licandro, V. Lorenzi, M. N. de Prá, C. Schambeau   +21 more
doaj   +1 more source

The Transition to Tectonic Control of Magmatism in the East African Rift System—The 20 Ma Samburu Event

Tectonics, Volume 44, Issue 9, September 2025.
Abstract The Samburu Series magmas of the East African Rift System are a key component of the Early Miocene magmatic resurgence, marking the initiation of plate‐scale volcanic events associated with extension, distinct from the prior continental flood basalt episodes.
Tyrone O. Rooney, R. Alex Steiner, John Kappelman, Eric Brown, Nicholas Mariita   +4 more
wiley   +1 more source

Logos-Zoe: A Contact Binary Triple System in the Trans-Neptunian Belt

The Astronomical Journal
The trans-Neptunian object (58534) 1997 CQ _29 (a.k.a. Logos) is a resolved wide binary in the dynamically Cold Classical population. With Hubble Space Telescope resolved observations where the primary Logos is well separated from its secondary Zoe it ...
Audrey Thirouin, Keith S. Noll, William M. Grundy, Scott S. Sheppard, Felicity Escarzaga, Brian Donnelly   +5 more
doaj   +1 more source

Neural canal ridges: A novel osteological correlate of postcranial neuroanatomy in dinosaurs

The Anatomical Record, Volume 308, Issue 5, Page 1349-1368, May 2025.
Abstract In this article, we document the widespread presence of bony ridges in the neural canals of non‐avian dinosaurs, including a wide diversity of sauropods, two theropods, a thyreophoran, and a hadrosaur. These structures are present only in the caudal vertebrae.
Jessie Atterholt, Mathew J. Wedel, Ron Tykoski, Anthony R. Fiorillo, Femke Holwerda, Thierra K. Nalley, Taormina Lepore, John Yasmer   +7 more
wiley   +1 more source

Evolution and architecture of an exhumed ocean‐facing coarse‐grained submarine canyon fill, Baja California, Mexico

Sedimentology, Volume 72, Issue 1, Page 189-226, January 2025.
ABSTRACT Present day submarine canyons are active conduits for the transfer of large volumes of sediment, carbon and pollutants from continents to oceans. However, the evolution of submarine canyons over geological timescales remains poorly understood due to their erosional nature and low preservation potential. The Late Cretaceous Punta Baja Formation
Max J. Bouwmeester, Ian A. Kane, David M. Hodgson, Stephen S. Flint, William J. Taylor, Euan L. Soutter, Adam D. McArthur, Miquel Poyatos‐Moré, Joshua Marsh, Ed Keavney, Rufus L. Brunt, Victoria Valdez‐Buso   +11 more
wiley   +1 more source