Results 51 to 60 of about 24,389,785 (159)

Description and terrestrial ages of the Calama Area Meteorite Collection (Atacama Desert, Chile)

Meteoritics &Planetary Science, EarlyView.
Abstract We present a comprehensive study of a meteorite collection from the Atacama Desert (Chile), the driest and most climatically stable desert in the world. This collection includes meteorites from three adjacent Dense Collection Areas (DCAs) in the northern part of the Atacama Desert: Calama, Sierra Gorda, and Chug Chug, referred to as the ...
Carine Sadaka, Jérôme Gattacceca, Florian Dumas, Régis Braucher, ASTER Team, Matthieu Gounelle, Dilyara Kuzina, Cyril Lorenz, Alexandre Corgne, Pierre Sempéré   +9 more
wiley   +1 more source

The Unusual Brightness Phase Curve of (65803) Didymos

The Planetary Science Journal
On 2022 September 26, NASA's Double Asteroid Redirection Test (DART) successfully hit Dimorphos, the smaller companion of the binary system formed with the asteroid (65803) Didymos.
P. H. Hasselmann, V. Della Corte, P. Pravec, S. Ieva, I. Gai, D. Perna, J. D. P. Deshapriya, E. Mazzotta-Epifani, E. Dotto, A. Zinzi, G. Poggiali, I. Bertini, A. Lucchetti, M. Pajola, J. Beccarelli, M. Dall’Ora, J.-Y. Li, S. L. Ivanovski, A. Rossi, J. R. Brucato, C. A. Thomas, O. Barnouin, J. M. Sunshine, A. S. Rivkin, M. Amoroso, A. Capannolo, S. Caporali, M. Ceresoli, G. Cremonese, R. T. Daly, G. Impresario, R. Lasagni-Manghi, M. Lavagna, D. Modenini, E. E. Palmer, P. Palumbo, S. Pirrotta, P. Tortora, M. Zannoni, G. Zanotti   +39 more
doaj   +1 more source

Post‐flight assessment of the OSIRIS‐REx Sample Return Capsule (SRC) for organic and other potential contaminants

Meteoritics &Planetary Science, EarlyView.
Abstract Regolith samples from the carbonaceous asteroid Bennu were stowed and delivered to Earth in the OSIRIS‐REx spacecraft's Sample Return Capsule (SRC). We applied multiple analytical techniques to study the components of the post‐flight SRC, with a focus on assessing the conditions and any contaminants to which the Bennu samples were exposed ...
Scott A. Sandford, Jason P. Dworkin, Kevin Righter, Feargus A. J. Abernethy, Romain Alosius, José C. Aponte, James Ball, Eve L. Berger, Denise K. Buckner, Henner Busemann, Simon J. Clemett, George Cody, Jamie Elsila, Dionysis I. Foustoukos, Ian A. Franchi, Daniel P. Glavin, Monica M. Grady, Heather V. Graham, Philipp R. Heck, Amy E. Hofmann, Yongsong Huang, Bumsoo Kim, Daniela Krietsch, Nicole G. Lunning, Colin Maden, Hannah L. McLain, Angel Mojarro, Michel Nuevo, Philippe Schmitt‐Kopplin, Ewerton Santos, Maria Schönbächler, Christopher J. Snead, Kathie L. Thomas‐Keprta, Alexander B. Verchovsky, Harold C. Connolly Jr., Dante S. Lauretta   +35 more
wiley   +1 more source

The Atacama Cosmology Telescope: Millimeter Observations of a Population of Asteroids or: ACTeroids

The Astrophysical Journal
We present fluxes and light curves for a population of asteroids at millimeter wavelengths, detected by the Atacama Cosmology Telescope (ACT) over 18,000 deg ^2 of the sky using data from 2017 to 2021.
John Orlowski-Scherer, Ricco C. Venterea, Nicholas Battaglia, Sigurd Naess, Tanay Bhandarkar, Emily Biermann, Erminia Calabrese, Mark Devlin, Jo Dunkley, Carlos Hervías-Caimapo, Patricio A. Gallardo, Matt Hilton, Adam D. Hincks, Kenda Knowles, Yaqiong Li, Jeffrey J McMahon, Michael D. Niemack, Lyman A. Page, Bruce Partridge, Maria Salatino, Jonathan Sievers, Cristóbal Sifón, Suzanne Staggs, Alexander van Engelen, Cristian Vargas, Eve M. Vavagiakis, Edward J. Wollack   +26 more
doaj   +1 more source

High‐pressure phase preservation in ordinary L‐chondrite melt veins: Evidence for control by post‐shock thermal evolution

Meteoritics &Planetary Science, EarlyView.
Abstract This study investigates the petrography and mineralogy of three L‐type ordinary chondrite meteorites: Northwest Africa (NWA) 4137 (L6), Homestead (L5), and Kunashak (L6). We studied the shock‐related deformation features in the matrix and the characteristics of the melt veins, including the presence or absence of high‐pressure (HP) phases. Our
S. Effraimidou, I. Baziotis, M. Simopoulou, L. Ferrière, C. Sanchez‐Valle, S. Klemme, J. Berndt, P. D. Asimow   +7 more
wiley   +1 more source

Rotationally Resolved Near-infrared Spectroscopy of Three Large Eurybates Family Members

The Planetary Science Journal
The Eurybates family is the largest collisional family in the Jupiter Trojan population. Previous visible spectroscopy of asteroid (3548) Eurybates has shown potential surface heterogeneity due to rotation of the asteroid.
Anicia Arredondo
doaj   +1 more source

Oxygen isotope thermometry and composition of aqueous fluids within the parent body of asteroid (101955) Bennu

Meteoritics &Planetary Science, EarlyView.
Abstract We report on the petrography and oxygen isotopic compositions from in situ analyses of carbonates (Ca‐carbonate, dolomite, and Fe‐rich magnesite), magnetite, and apatite in particles from asteroid Bennu. Using oxygen isotope thermometry of Ca‐carbonate, dolomite, and magnetite, we estimated crystallization temperatures and the oxygen isotopic ...
Gary R. Huss, Kazuhide Nagashima, Elena Dobrică, Alexander N. Krot, Gregory Cane, Zoe E. Wilbur, Timothy J. McCoy, Catherine M. Corrigan, Sara S. Russell, Jessica J. Barnes, Ann N. Nguyen, Harold C. Connolly Jr., Dante S. Lauretta   +12 more
wiley   +1 more source

3 μm Phase Curves of Main-belt Asteroids from NEOWISE Photometry

The Planetary Science Journal
The shapes of asteroid phase curves are influenced by the physical properties of asteroid surfaces. The variation of an asteroid’s brightness as a function of the solar phase angle can tell us about surface properties such as grain size distribution ...
Matthew Varakian, Nancy Chanover, Joseph Masiero, Dagmara Oszkiewicz   +3 more
doaj   +1 more source

A Microkrystite from the Australasian Tektite/Microtektite Strewn Field

Meteoritics &Planetary Science, EarlyView.
Abstract Microkrystites are glassy impact spherules. They contain primary crystallites carrying information on the physical and chemical conditions prevailing during vaporization, melting, and ejection in large impact cratering events. We report on the geochemistry and mineralogy down to nanometer scale of the first microkrystite (ODP1144A,14) from the
Matteo Del Rio, Luigi Folco, Matteo Masotta, Ana Černok, Enrico Mugnaioli   +4 more
wiley   +1 more source

A Pre-flyby View on the Origin of Asteroid Donaldjohanson, a Target of the NASA Lucy Mission

The Planetary Science Journal
The NASA Lucy mission is scheduled to fly by the main-belt asteroid (52246) Donaldjohanson on 2025 April 20. Donaldjohanson (DJ hereafter) is a member of the primitive (C-type class) Erigone collisional asteroid family located in the inner main belt in ...
Simone Marchi, David Vokrouhlický, David Nesvorný, William F. Bottke, Josef Ďurech, Harold F. Levison   +5 more
doaj   +1 more source