Results 111 to 120 of about 19,575 (244)

The triaxial ellipsoid dimensions, rotational pole, and bulk density of ESA Rosetta target asteroid (21) Lutetia

, 2010
We seek the best size estimates of the asteroid (21) Lutetia, the direction of its spin axis, and its bulk density, assuming its shape is well described by a smooth featureless triaxial ellipsoid, and to evaluate the deviations from this assumption ...
A. Conrad, B. Carry, Barucci, Barucci, Belskaya, Birlan, Bowell, C. Dumas, C. R. Chapman, Carry, Carry, Chapman, Chapman, Clark, Conan, Conrad, Consolmagno, DeMeo, Drummond, Drummond, Drummond, Drummond, Fienga, Flynn, Fujiwara, Gaffey, H. A. Weaver, J. C. Christou, J. D. Drummond, Kryszczyńska, Lazzarin, Lazzarin, Lazzarin, Macke, Magri, Magri, McCord, Morrison, Mueller, Mugnier, Nedelcu, P. M. Tamblyn, Perna, Rivkin, Rivkin, Shepard, Tedesco, Torppa, Vernazza, Vernazza, W. J. Merline, Weaver, Zellner   +52 more
core   +2 more sources

Confined Chemistry in Space: Zeolite‐Supported Fe13 Nanoclusters Modulate CS Reactivity

Small Structures, Volume 7, Issue 3, March 2026.
The study explores how an Fe13 cluster confined in chabazite reshapes the reaction of CS and H2 under astrochemical conditions. Confinement promotes C–S bond cleavage over hydrogenation, directing chemistry toward CH4 and H2S formation. Additional CS enables CS2 and C2 species. Microkinetic analysis identifies protoplanetary environments where zeolites
Gerard Pareras, Albert Rimola
wiley   +1 more source

Trace element composition of troilite, iron and iron-nickel metall from meteorite Chelyabinsk

Литосфера, 2015
We studied the contents of trace elements in troilite, iron and in iron-nickel metal from meteorite Chelyabinsk by means of LA-ICP-MS. The features of the distribution of siderophile and chalcophile elements in sulfide and metallic phase in gray and ...
S. Yu. Stepanov, S. V. Berzin
doaj   +2 more sources

Isotopic composition of silver in iron meteorites

Journal of Geophysical Research, 1964
With a view to developing a new dating method based on extinct 6.8 m.y. Pd/sup 107/, silver was isolated from 18 samples of the iron meteorites Bristol, Canyon Diablo, Grant, Odessa, Pinon, Sandia Mountains, and Toluca. The silver concentation (11 to 197 ppb) was determined on an aliquot by isotope dilution and also by neutron activation analysis of ...
A. K. Chakraburtty, C. M. Stevens, H. C. Rushing, E. Anders   +3 more
openaire   +2 more sources

Surface‐Driven Protocell Formation in Geologically Relevant Early Earth Environment

ChemSystemsChem, Volume 8, Issue 2, March 2026.
Illustration of a prebiotic early‐Earth environment showing cell‐like protocells (blue spheres) and other complex organic molecules (pink and green spheres) distributed across terrestrial surfaces and within subsurface niches. Volcanic landscapes and mineral‐rich substrates provide diverse geochemical settings for the assembly and evolution of ...
Pamela Knoll, Silvia Holler
wiley   +1 more source

Fe isotopic composition of Martian meteorites [PDF]

, 2005
In the present work, we have measured iron isotope compositions of a group of Martian meteorites to establish a baseline Fe-isotope fractionation pattern in the case of high-temperature igneous rocks from Mars.
Anand, M., Russell, S. S., Mullane, E., Grady, M. M.   +3 more
openaire  

Fourier Neural Operator for Moonquake Detection

Earth and Space Science, Volume 13, Issue 3, March 2026.
Abstract Moonquakes provide critical observations for probing the lunar interior, yet their analysis is hindered by the limited number of recordings and their inherently low signal‐to‐noise ratio (S/N). Conventional detection methods such as Short‐Term Average/Long‐Term Average (STA/LTA) perform poorly on lunar data, while standard deep learning models
Basem Al‐Qadasi, Umair Bin Waheed
wiley   +1 more source

Presolar diamonds in Krymka: C, N and Xe isotope data from grain-size separates and comparison with other meteorites [PDF]

, 2004
Comparison of carbon isotope variations in grain size fractions of presolar diamonds separated from three meteorites (Efremovka, Boriskino and Krymka) suggest that diamond from various parts of solar nebular have had diffrent C isotope ...
Fisenko, A. V., Pillinger, C. T., Semjonova, L. F., Verchovsky, A. B, Wright, I. P.   +4 more
core  

Composition of Near-Earth Asteroid 2008 EV5: Potential target for Robotic and Human Exploration

, 2012
We observed potentially hazardous asteroid (PHA) 2008 EV5 in the visible (0.30-0.92 microns) and near-IR (0.75-2.5 microns) wavelengths to determine its surface composition. This asteroid is especially interesting because it is a potential target for two
Benner, Bonnie J. Buratti, Busch, Cloutis, Cushing, Gaffey, Gaffey, Gaffey, Hicks, Kenneth Lawrence, Larson, Lucille Le Corre, Michael Hicks, Michael J. Gaffey, Oke, Ostro, Paul A. Abell, Paul S. Hardersen, Pravec, Rayner, Reddy, Rubin, Sanchez, Shepard, Somers, Vishnu Reddy, Weisberg, Weisberg   +27 more
core   +1 more source

Distance‐Dependent Stray Field Decay in Magnetically Stable Remanence Carriers: Implications for Magnetic Microscopy

Journal of Geophysical Research: Solid Earth, Volume 131, Issue 3, March 2026.
Abstract Micropaleomagnetic analysis offers a path to high‐precision reconstructions of ancient magnetic fields from terrestrial and space‐returned samples by inverting the vertical stray field of individual particles to recover their magnetic moments through the use of magnetic microscopes.
U. D. Bellon, G. F. Souza‐Junior, W. Williams, L. Uieda, A. R. Muxworthy, L. Nagy, G. A. Paterson, C. S. Moraes, R. Fu, R. I. F. Trindade   +9 more
wiley   +1 more source