Results 161 to 170 of about 52,439 (271)

New Li Lidar Observations and Model Simulations: A Window to Anthropogenic Signatures

open access: yesGeophysical Research Letters, Volume 52, Issue 22, 28 November 2025.
Abstract We present Li lidar observations in the mesopause region above Kühlungsborn, Germany (54°N, 12°E). The lithium layer is mainly formed by meteoric ablation. But lithium has a much higher relative abundance in space debris compared with meteoroids, making it a good indicator of anthropogenic influence in the upper mesosphere.
M. Gerding   +4 more
wiley   +1 more source

Spectral Effects of Shock Darkening on Ordinary Chondrite and Howardite, Eucrite, and Diogenite Meteorites

open access: yesThe Planetary Science Journal
Impacts are the most ubiquitous processes on planetary bodies in our solar system. During these impact events, shock waves can deposit enough energy to produce shock-induced darkening in the target material, resulting in an alteration of its spectral ...
Juan A. Sanchez   +4 more
doaj   +1 more source

Boulders on Bennu: Low Apparent Thermal Inertia Caused by Thermal Fatigue Fractures

open access: yesGeophysical Research Letters, Volume 52, Issue 21, 16 November 2025.
Abstract Boulders covering the surfaces of asteroids Bennu and Ryugu have apparent thermal inertias substantially lower than their meteorite analogs. This has led to the inference that boulders on Bennu may be unlike any known meteorite. However, samples returned from Ryugu have a thermal inertia 3.5 times higher than the apparent thermal inertia ...
Catherine M. Elder
wiley   +1 more source

Long-term Spectral Monitoring of Active Asteroid (6478) Gault: Implications for the H Chondrite Parent Body

open access: yesThe Planetary Science Journal
Active asteroid (6478) Gault underwent outbursts between late 2018 and early 2019 with tails morphologically similar to the ejecta from Dimorphous following the Double Asteroid Redirection Test impact.
Adam Battle   +5 more
doaj   +1 more source

Antarctic meteorite descriptions, 1980 [PDF]

open access: yes
Specimens found in the Alan Hills area include 361 ordinary chondrites, 4 carbonaceous chondrites, 6 achondrites, and 2 irons. Thirteen specimens measured over 11 cm in diameter and 69 between 5 to 10 cm in diameter are reported.
Bogard, D. D.   +3 more
core   +1 more source

Discovery of primitive CO 2 -bearing fluid in an aqueously altered carbonaceous chondrite [PDF]

open access: gold, 2021
A. Tsuchiyama   +8 more
openalex   +1 more source

Large Carbonaceous Chondrite Parent Bodies Favored by Abundance–Volatility Modeling: A Possible Chemical Signature of Pebble Accretion

open access: yesThe Planetary Science Journal
Primitive meteorite groups such as the Vigarano, Mighei, and Karoonda carbonaceous chondrites have enigmatic patterns of elemental abundances, with moderately volatile elements—those that transition from vapor to condensate between ∼400 and ∼900 K ...
Jeremy W. Boyce   +3 more
doaj   +1 more source

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