Results 1 to 10 of about 21,431 (106)

GROUPS OF METEORITE-PRODUCING METEOROIDS AND METEORITES IN ASTEROIDAL ORBITS AND THEIR SOURCES

open access: yesOdessa Astronomical Publications, 2020
This paper presents the results of the analysis of possible existence of nine near-Earth meteorite-producing groups in asteroidal orbits, consisting of sporadic fireballs from the IAU MDC 2007 database, sporadic meteors from the SonotaCo database ...
Yu. M. Gorbanev   +2 more
doaj   +2 more sources

Localizing the First Interstellar Meteor with Seismometer Data

open access: yesSignals, 2023
The first meter-scale interstellar meteor (IM1) was detected by US government sensors in 2014, identified as an interstellar object candidate in 2019, and confirmed by the Department of Defense (DoD) in 2022.
Amir Siraj, Abraham Loeb
doaj   +1 more source

The First Instrumentally Documented Fall of an Iron Meteorite: Orbit and Possible Origin

open access: yesThe Astrophysical Journal, 2023
A bright fireball observed on 2020 November 7, over Scandinavia, produced the first iron meteorite with a well-determined pre-atmospheric trajectory.
Ihor Kyrylenko   +7 more
doaj   +1 more source

Slow Neutron-Capture Process: Low-Mass Asymptotic Giant Branch Stars and Presolar Silicon Carbide Grains

open access: yesUniverse, 2022
Presolar grains are microscopic dust grains that formed in the stellar winds or explosions of ancient stars that died before the formation of the solar system.
Nan Liu, Sergio Cristallo, Diego Vescovi
doaj   +1 more source

Deepest ever photographed Geminid with small but non-negligible terminal mass

open access: yesAstronomy & Astrophysics
We report an instrumental observation of the very exceptional Geminid fireball that was observed in the scope of the Czech part of the European Fireball Network (EN) on 13 December, 2012 at 4h12m59.4s UT.
Spurný Pavel, Borovička Jiří
doaj   +1 more source

Mare versus highland lunar impact flash light curve dichotomy

open access: yesAstronomy & Astrophysics
We performed a comprehensive analysis of lunar impact flash (LIF) light curve shapes and their dependence on the lunar terrain, using the large sample of LIFs detected by NELIOTA over the last 9 years. We classified 124 multi-frame light curves into mare,
Athanasopoulos D.   +7 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

The Role of Chlorate‐Driven Oxidative Weathering in Shaping Clay Deposits on Mars

open access: yesJournal of Geophysical Research: Planets, Volume 131, Issue 9, September 2026.
Abstract Oxidized clays and the widespread Al/Si‐over‐Fe/Mg stratigraphy on Mars imply prolonged water‐rock interactions and efficient oxidative weathering despite the largely anoxic conditions of Early Mars when most deposits formed during the climate optimum.
Jiawei Wang, Nicole M. Fernandez
wiley   +1 more source

Formation and Alteration of Magnesite Nodules From Kunwarara, Queensland, Australia, as an Analog to Mg‐Carbonate Formation on Mars

open access: yesJournal of Geophysical Research: Planets, Volume 131, Issue 9, September 2026.
Abstract Magnesite (MgCO3) is a magnesium (Mg) carbonate mineral that records the aqueous environmental conditions of its formation. On Earth, magnesite forms in metamorphic, diagenetic or pedogenic environments, and distinguishing between these environments is critical for understanding the fluid chemistry during magnesite precipitation. Mg carbonates
E. L. Cardarelli   +6 more
wiley   +1 more source

The Nysa family as the main source of unequilibrated LL ordinary chondrites

open access: yesAstronomy & Astrophysics
Context. The origin of the petrologic diversity observed in ordinary chondrites (OCs), the most common meteorites on Earth, remains debated. Competing models invoke either depth-dependent sampling of a single thermally stratified (‘onion-shell’) parent ...
Marsset M.   +18 more
doaj   +1 more source

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