Results 31 to 40 of about 20,851 (228)

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

Delivery of Dark Material to Vesta via Carbonaceous Chondritic Impacts

, 2012
NASA's Dawn spacecraft observations of asteroid (4) Vesta reveal a surface with the highest albedo and color variation of any asteroid we have observed so far. Terrains rich in low albedo dark material (DM) have been identified using Dawn Framing Camera (
Adams, Andreas Nathues, Andrew W. Beck, Beck, Binzel, Binzel, Bogard, Bottke, Bottke, Buchanan, Buchanan, Christopher T. Russell, Cloutis, Cloutis, Daniel D. Durda, David Blewett, David Mittlefehldt, David Nesvorny, David P. O’Brien, Debra Buczkowski, Desnoyers, Edward A. Cloutis, Elizabeth M. Palmer, Gaffey, Gaffey, Gomes, Gounelle, Grady, Harry Y. McSween, Hasegawa, Hiroi, Holger Sierks, Holsapple, Jaumann, Jean-Philippe Combe, Jennifer E.C. Scully, Jian-Yang Li, Jutzi, Keil, Kris J. Becker, Le Corre, Levison, Love, Love, Lucille Le Corre, Mayne, Megha U. Bhatt, Melosh, Michael J. Gaffey, Mittlefehldt, Nesvorny, Nesvorny´, O’Brien, Paul J. Mann, Reddy, Reddy, Rivkin, Robert Gaskell, Rubin, Sierks, Svetsov, Taylor, Thomas, Thomas B. McCord, Tsiganis, Vishnu Reddy, Wasson, William F. Bottke, Wilson, Wilson, Wilson, Zolensky   +71 more
core   +1 more source

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

Petrology and mineralogy of the Viñales meteorite, the latest fall in Cuba

Science Progress, 2021
The new Cuban chondrite, Viñales, fell on February first, 2019 at Pinar del Rio, northwest of Cuba (22°37′10″N, 83°44′34″W). A total of about 50–100 kg of the meteorite were collected and the masses of individual samples are in a range 2–1100 g.
Feng Yin, Deqiu Dai
doaj   +1 more source

Chondrule size and related physical properties: a compilation and evaluation of current data across all meteorite groups

, 2014
The examination of the physical properties of chondrules has generally received less emphasis than other properties of meteorites such as their mineralogy, petrology, and chemical and isotopic compositions.
Biltz, Alison E., Corbett, Bernadette M., Ebel, Denton S., Friedrich, Jon M., Iotzov, Ivan V., Khan, Wajiha S., Weisberg, Michael K., Wolman, Matthew D.   +7 more
core   +1 more source

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

New knowledge about shock events that affected the L‐chondrite parent body from two heavily shocked L6 meteorite finds

Meteoritics &Planetary Science, EarlyView.
Abstract We report new results from a study of shock‐related features in the L6 ordinary chondrites Northwest Africa (NWA) 4672 and NWA 12841. Our observations confirm the occurrence of eight high‐pressure (HP) minerals in each meteorite, namely, ringwoodite, majorite, akimotoite, wadsleyite, albitic jadeite, lingunite, tuite, and xieite.
I. Baziotis, L. Ferrière, C. Ma, J. Hu, D. Palles, P. D. Asimow   +5 more
wiley   +1 more source

Transmission electron microscopy analysis of shock veins in the meteorite Jesenice

Geologija
Meteorite Jesenice is a weakly (S3) shocked ordinary chondrite from Slovenia. The shock event was violent enough to cause localized partial melting of the meteorite and the formation of shock veins.
Bojan Ambrožič, Sašo Šturm, Mirijam Vrabec   +2 more
doaj   +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