Results 31 to 40 of about 32,577 (247)

Study of the Extraterrestrial Materials at Antarctica, III : On the Yamato Meteorites

Antarctic Record, 1973
Antarctica is thought to be the most suitable place for searching extraterrestrial materials. Since 1965, we have been studying microtektite and cosmic dust in Antarctica.
Masako SHIMA, Akihiko OKADA, Makoto SHIMA   +2 more
doaj   +1 more source

Near to Mid-infrared Spectroscopy of (65803) Didymos as Observed by JWST: Characterization Observations Supporting the Double Asteroid Redirection Test

The Planetary Science Journal, 2023
The Didymos binary asteroid was the target of the Double Asteroid Redirection Test (DART) mission, which intentionally impacted Dimorphos, the smaller member of the binary system.
Andrew S. Rivkin, Cristina A. Thomas, Ian Wong, Benjamin Rozitis, Julia de León, Bryan Holler, Stefanie N. Milam, Ellen S. Howell, Heidi B. Hammel, Anicia Arredondo, John R. Brucato, Elena M. Epifani, Simone Ieva, Fiorangela La Forgia, Michael P. Lucas, Alice Lucchetti, Maurizio Pajola, Giovanni Poggiali, Jessica N. Sunshine, Josep M. Trigo-Rodríguez   +19 more
doaj   +1 more source

Spectral properties of the largest asteroids associated with Taurid Complex [PDF]

, 2014
We obtained spectra of six of the largest asteroids (2201, 4183, 4486, 5143, 6063, and 269690) associated with Taurid complex. The observations were made with the IRTF telescope equipped with the spectro-imager SpeX.
Birlan, M., Cristescu, C. P., Nedelcu, D. A., Popescu, M., Vaubaillon, J.   +4 more
core   +2 more sources

New carbonaceous chondrite Northwest Africa 11781 (CM2)

Литосфера, 2019
Research subject. The article presents the results of a study of a new meteorite Northwest Africa 11781.Material and methods. The material for the study was a fragment of a meteorite weighing 15.56 g, from which 4 transparent polished sections with a ...
K. A. Dugushkina, S. V. Berzin
doaj   +1 more source

Trace element geochemistry of peridotites from the Izu-Bonin-Mariana Forearc, Leg 125

, 1992
Trace element analyses (first-series transition elements, Ti, Rb, Sr, Zr, Y, Nb, and REE) were carried out on whole rocks and minerals from 10 peridotite samples from both Conical Seamount in the Mariana forearc and Torishima Forearc Seamount in the Izu ...
Ingram, G., Johnson, K. T. M., Parkinson, I. J., Pearce, J. A., Thirlwall, M. F.   +4 more
core   +1 more source

Origins of the Pangkaimen Au Deposit in the Northern Great Xing'an Range, China: Evidence From Geochronological, Geochemical, Fluid Inclusion, and H–O–S–Pb Isotope Data

Geological Journal, EarlyView.
The Pangkaimen Au–Ag deposits belong to the epithermal Au deposits, which are of great significance for guiding the research and development of this type of gold deposit. Metallogenic model diagram of Pangkaimen Au–Ag deposit. ABSTRACT The gold (Au) metallogenic belt in the northern Great Xing'an Range is characterised by the wide occurrence of the ...
Sheng Lu, Hongpeng Chen, Chenglu Li, Ye Wang, Tiesheng Li, Rigen Wu, Zengtao Li, Zhichao Song, Xiannan Zhu   +8 more
wiley   +1 more source

Abiotic sugars in (162173) Ryugu and the primitive CI carbonaceous chondrite Orgueil [PDF]

Meinert C, Leyva V, Robert M, Pepino R, Bocková J.   +4 more
europepmc   +2 more sources

Mikrometeorite und ihr Ursprung im Sonnensystem: Außerirdischer Staub zum Anfassen

Physik in unserer Zeit, EarlyView.
Mit einer Größe, die der Dicke eines Haares entspricht, sind Mikrometeorite kaum sichtbar für das bloße Auge. Dennoch werden sie seit etwa 150 Jahren gesammelt, und seit wenigen Jahren sogar auf unseren Hausdächern. Als Kostproben von Asteroiden oder Kometen stellen sie wertvolle Boten unseres Sonnensystems dar.
Jenny Feige
wiley   +1 more source

An Almahata Sitta EL3 fragment: implications for the complex thermal history of enstatite chondrites

Progress in Earth and Planetary Science, 2021
Almahata Sitta is a polymict breccia, consisting of many kinds of clasts. Here we present our mineralogical and petrological results on an EL3 fragment, MS-177 from Almahata Sitta.
M. Kimura, M. K. Weisberg, A. Takaki, N. Imae, A. Yamaguchi   +4 more
doaj   +1 more source

New Paradigms For Asteroid Formation

, 2015
Asteroids and meteorites provide key evidence on the formation of planetesimals in the Solar System. Asteroids are traditionally thought to form in a bottom-up process by coagulation within a population of initially km-scale planetesimals.
Cuzzi, Jeffrey N., Gounelle, Matthieu, Jacquet, Emmanuel, Johansen, Anders, Morbidelli, Alessandro   +4 more
core   +1 more source