Results 131 to 140 of about 64,440 (194)

Multiple carriers of Q noble gases in primitive meteorites

, 2015
The main carrier of primordial heavy noble gases in chondrites is thought to be an organic phase, known as phase Q, whose precise characterization has resisted decades of investigation.
Amari, Brearley, Busemann, Clark, Crowther, Crozaz, Derenne, Gilmour, Gilmour, Goles, Gros, Guillaume Avice, Hewins, Hohenberg, Huss, Huss, Kellerud, Kerridge, Lewis, Lewis, Marrocchi, Marrocchi, Marrocchi, Marrocchi, Marrocchi, Marrocchi, Mathew, Matsuda, Meshik, Meshik, Nicolas Estrade, Nishimura, Ott, Ozima, Piani, Ragettli, Tachibana, Verchovsky, Vogel, Wieler, Yves Marrocchi   +40 more
core   +2 more sources

Large Carbonaceous Chondrite Parent Bodies Favored by Abundance–Volatility Modeling: A Possible Chemical Signature of Pebble Accretion

The Planetary Science Journal
Primitive meteorite groups such as the Vigarano, Mighei, and Karoonda carbonaceous chondrites have enigmatic patterns of elemental abundances, with moderately volatile elements—those that transition from vapor to condensate between ∼400 and ∼900 K ...
Jeremy W. Boyce, Francis M. McCubbin, Nicole Lunning, Tyler Anderson   +3 more
doaj   +1 more source

Glassy chondrule mesostasis in EET 96029: a CM3 component of a minimally altered CM2 carbonaceous chondrite [PDF]

, 2014
No abstract ...
Lee, M.R., Lindgren, P.
core  

A carbonaceous chondrite and cometary origin for icy moons of Jupiter and Saturn

Earth and Planetary Science Letters, 2020
A. Néri, F. Guyot, B. Reynard, C. Sotin
semanticscholar   +1 more source

The evolution of organic material on Asteroid 162173 Ryugu and its delivery to Earth

Nature Communications
The recent return of samples from asteroid 162173 Ryugu provides a first insight into early Solar System prebiotic evolution from known planetary bodies. Ryugu’s samples are CI chondrite-like, rich in water and organic material, and primarily composed of
H. G. Changela, Y. Kebukawa, L. Petera, M. Ferus, E. Chatzitheodoridis, L. Nejdl, R. Nebel, V. Protiva, P. Krepelka, J. Moravcova, R. Holbova, Z. Hlavenkova, T. Samoril, J. C. Bridges, S. Yamashita, Y. Takahashi, T. Yada, A. Nakato, K. Sobotkova, H. Tesarova, D. Zapotok   +20 more
doaj   +1 more source

Contribution of the Moon-forming Impactor to the Volatile Inventory in the Bulk Silicate Earth

The Planetary Science Journal
The timing and mechanism by which the present-day inventory of life-essential volatiles hydrogen–carbon–nitrogen–sulfur (H–C–N–S) in the bulk silicate Earth (BSE) was established are debated.
Damanveer S. Grewal, Yoshinori Miyazaki, Nicole X. Nie   +2 more
doaj   +1 more source

Clues in the rare gas isotopes to early solar system history [PDF]

The results of the radioactive dating and the discovery of gas-rich meteorites on the Moon surface are reviewed. Special attention is paid to the extinct radioactivity iodine-129.
Reynolds, J. H.
core   +1 more source

Infrared Spectroscopy of RNA Nucleosides in a Wide Range of Temperatures

Life
The RNA world hypothesis suggests that early cellular ancestors relied solely on RNA molecules for both genetic information storage and cellular functions.
Susana Iglesias-Groth, Franco Cataldo, Martina Marin-Dobrincic   +2 more
doaj   +1 more source

The effect of progressive space weathering on the organic and inorganic components of a carbonaceous chondrite

, 2020
M. Thompson, R. Morris, S. Clemett, M. Loeffler, D. Trang, L. Keller, R. Christoffersen, D. Agresti   +7 more
semanticscholar   +1 more source

Multiwavelength JWST Observations of (3200) Phaethon Show a Dehydrated Object with an Aqueously Altered Origin

The Planetary Science Journal
We present JWST observations of the near-Earth asteroid (3200) Phaethon using NIRCam, NIRSpec, and MIRI to further investigate the composition of Phaethon’s surface.
Cristina A. Thomas, Andrew S. Rivkin, Ian Wong, Matthew M. Knight, Sean E. Marshall, Christopher W. Haberle, Aidan Madden-Watson, Joshua P. Emery, Annika Gustafsson, Stefanie N. Milam, Heidi B. Hammel, Ellen S. Howell, Ronald J. Vervack Jr.   +12 more
doaj   +1 more source