Results 91 to 100 of about 2,900 (245)

The optical, seismic, and infrasound signature of the March 5 2022, bolide over Central Italy. [PDF]

open access: yesSci Rep, 2023
Olivieri M   +9 more
europepmc   +1 more source

Revisiting the Hummeln structure, Sweden—A shallow marine Cambrian impact structure

open access: yesMeteoritics &Planetary Science, EarlyView.
Abstract Hummeln is a simple impact structure located in south‐eastern Sweden. It is approximately 1.2 km in diameter and almost completely covered by a lake. Here, we present the first detailed investigation of impactites and mapping of the 164.25 m deep drill core Hummeln‐1 with a focus on impact metamorphism and the impact process.
S. Alwmark   +8 more
wiley   +1 more source

Extra-Terrestrial Meteors

open access: yes, 2019
International audienceAll planets and satellites of our solar system are subject to acontinuous rain of material, ranging in size from specks of dust toobjects the size of boulders. Upon impact, these objects deposit theirkinetic energy into the incident
Hueso, Ricardo   +4 more
core  

"Stars Falling to Earth"—Mental Models of Comets and Meteors

open access: yes
The present study examines students' conceptions of comets and meteors using qualitative research methods. A total of 35 semi-structured interviews were conducted with students in grades 7 and 9 in Germany, aiming to gain a richer understanding of how ...
Pusch, A. (Alexander)   +2 more
core   +1 more source

Impact‐diagnostic criteria for use in confirming a meteorite impact origin of terrestrial geological structures: Recommendations by the Impact Cratering Committee of the Meteoritical Society

open access: yesMeteoritics &Planetary Science, EarlyView.
Abstract The framework of the Impact Cratering Committee (ICC) of the Meteoritical Society was approved in 2020, with the first committee members appointed in 2023. The ICC has a mandate to (1) approve, maintain, and update a database of confirmed terrestrial meteorite impact structures, (2) define and regularly update the criteria used for ...
A. J. Cavosie   +11 more
wiley   +1 more source

About distribution and origin of the peculiar group of sporadic meteors

open access: yes, 1992
A particular group of sporadic meteors are picked out from analysis of meteor catalogs derived from results of radar observations in Mogadisho and Kharkov.
Andreev, V. V.
core  

Meteors provide clues into other worlds

open access: yes, 2022
If you look up on a clear night without much light pollution, you should see a meteor roughly every ten minutes. Most meteors are rocks the size of a grain of sand falling from space at hypersonic speeds, and the pressure experienced as they hurtle ...
Johnson, Erik
core  

Stardust Mine: A 2024 gabbroic shergottite from Arizona, USA

open access: yesMeteoritics &Planetary Science, EarlyView.
Abstract This study provides an initial characterization of Stardust Mine, a fresh gabbroic enriched shergottite collected in Arizona, USA, in September 2024 and is the first Martian meteorite to be unequivocably collected on US soil. Analysis was conducted on the type specimen and finds that Stardust Mine is composed of equal proportions of pyroxene ...
Jennifer T. Mitchell   +4 more
wiley   +1 more source

Estimated visual magnitudes of the EISCAT UHF meteors

open access: yes, 2008
We have investigated the conditions for simultaneous meteor observations with the EISCAT UHF radar system and telescopic optical devices. The observed characteristics of 410 meteors detected by all three UHF receivers are compared with model simulations ...
Westman, Assar,   +5 more
core   +1 more source

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