Results 41 to 50 of about 8,179,295 (185)

Xenoliths in meteorites: Insights into the dynamics of material exchange between asteroids

open access: yesMeteoritics &Planetary Science, EarlyView.
Abstract A minor fraction of meteorites contains xenoliths, that is, clasts that were formed on a different parent body than that of the host lithology. The occurrence of xenoliths is direct evidence for the exchange of material between asteroids, including exchanges between asteroids from the carbonaceous (CC) and non‐carbonaceous (NC) reservoirs ...
J. Gattacceca   +17 more
wiley   +1 more source

The Volatile Composition and Activity Evolution of Main-belt Comet 358P/PANSTARRS

open access: yesThe Planetary Science Journal
We report the detection of water vapor associated with main-belt comet 358P/PANSTARRS on UT 2024 January 8–9 using the NIRSPEC instrument on board JWST.
Henry H. Hsieh   +19 more
doaj   +1 more source

Tectonic Re‐Organization and Onset of South Caspian Escape Tectonics at 1.8–2.4 Ma

open access: yesBasin Research, Volume 38, Issue 6, November‐December 2026.
We show that the presently active tectonics of the South Caspian began relatively recently, likely in the range 1.8–2.4 Myr and replacing an older tectonic configuration ending in the Miocene at ~6 Ma. The various short‐lived stages in the destruction of the South Caspian have potential for insight into the late stages of basin closure and the ...
N. Abdullayev   +11 more
wiley   +1 more source

Sublimation-driven fragmentation of icy dust aggregates in main-belt comets

open access: yesAstronomy & Astrophysics
Context. The post-release fragmentation behavior of dust from main-belt comets (MBCs) significantly alters the particle size distribution and number density, thereby affecting the accuracy of dust impact risk assessments for spacecraft. Aims.
Zhao Yujie   +7 more
doaj   +1 more source

Drift‐Resonance Driven by Field Line Resonance Gradients: A Mechanism for Non‐Dispersive Microinjection Events

open access: yesGeophysical Research Letters, Volume 53, Issue 19, 16 October 2026.
Abstract Ultra‐low‐frequency waves in the magnetosphere often produce field line resonances with strong spatial gradients in wave amplitude. We analyze a form of drift resonance driven by these gradients near the resonant field line. This mechanism differs fundamentally from conventional gradient‐ and curvature‐driven drift resonance and predicts an ...
J. Liu   +4 more
wiley   +1 more source

Overview of Water-Ice in Asteroids—Targets of a Revolution by LSST and JWST

open access: yesUniverse
Water-ice occurs inside many minor bodies almost throughout the Solar System. To have an overview of the inventory of water-ice in asteroids, beside the general characteristics of their activity, examples are presented with details, including the Hilda ...
Ákos Kereszturi   +5 more
doaj   +1 more source

From Flybys to Sample Return: A Review of Space Probes and Robotic Sampling Technologies for Small Bodies

open access: yesJournal of Field Robotics, Volume 43, Issue 7, Page 4475-4514, October 2026.
ABSTRACT As a crucial puzzle piece of deep space exploration, exploring small bodies can provide significant scientific insights and valuable mineral resources. Unlike missions to the Moon and Mars, small‐body missions pose distinct technical challenges, including communication delays, weak gravity, and uncertain environments. This paper reviews a full
Xin Zhang   +3 more
wiley   +1 more source

Testing the comet nature of main belt comets. The spectra of 133P/Elst-Pizarro and 176P/LINEAR [PDF]

open access: yes, 2011
Context. Dynamically, 133P/Elst-Pizarro and 176P/LINEAR are main belt asteroids, likely members of the Themis collisional family, and unlikely of cometary origin.
Hainaut, O. R.   +15 more
core   +1 more source

THE EXTRAORDINARY MULTI-TAILED MAIN-BELT COMET P/2013 P5 [PDF]

open access: yesThe Astrophysical Journal, 2013
13 pages, two figures, three tables, Accepted to ...
Jewitt, D.   +4 more
openaire   +3 more sources

Orbits of the Asteroids Discovered at the Molėtai Observatory in 2000–2004

open access: yesOpen Astronomy, 2014
The paper presents statistics of the asteroids observed and discovered at the Molėtai Observatory, Lithuania in 2000–2004 within the project for astrometric observations of the near-Earth objects (NEOs), the main belt asteroids and comets.
Černis K.   +2 more
doaj   +1 more source

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