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861
Carbon in the core
Published 1993“…Thus, impact heating and degassing of the protoearth should have led to an Fe-rich melt with around 2-4 wt% carbon, compared to the 0.01-0.6 wt% in iron meteorites and 0.3-3 ppm C predicted to be present in Fe condensed from the solar gas. …”
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862
Breaking Degeneracies in Formation Histories by Measuring Refractory Content in Gas Giants
Published 2023-01-01“…For O/Si and C/Si, we present a global picture of their variation with distance and time based on what we know from the solar system meteorites and an updated understanding of the variations of thermal processing within protoplanetary disks. …”
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863
A new model of meteoric calcium in the mesosphere and lower thermosphere
Published 2018-10-01“…It has been known for more than 30 years that the Ca atom layer is depleted by over 2 orders of magnitude compared with Na, despite these elements having nearly the same elemental abundance in chondritic meteorites. In contrast, the Ca<sup>+</sup> ion abundance is depleted by less than a factor of 10. …”
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864
Ten-minute prediction of solar irradiance based on cloud detection and a long short-term memory (LSTM) model
Published 2022-11-01“…Together with cloud, the meteoritical parameters and the historical GHI are taken as the input of a deep learning network simultaneously, which is based on long short-term memory network (LSTM) and optimised by Bayesian Optimisation (BO). …”
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865
Aluminum solubility in bridgmanite up to 3000 K at the top lower mantle
Published 2021-03-01“…Our study may help explain dynamics of the top lower mantle and constrain pressure and temperature conditions of shocked meteorites.…”
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866
Proof of Principle of the Lunar Soil Volatile Measuring Instrument on Chang’ e-7: In Situ N Isotopic Analysis of Lunar Soil
Published 2024-01-01“…At present, the research on the lunar nitrogen isotopic compositions is mainly based on the lunar meteorites and the samples brought back by the Apollo and Luna missions. …”
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867
Exploring the astrophysical energy range of the 27Al(p,α)24Mg reaction: A new recommended reaction rate
Published 2022-03-01“…It is estimated through the detection of the 1809-keV γ-line of the daughter 26Mg and from the superabundance of 26Mg in comparison with the most abundant 24Mg isotope in meteorites. Accurate knowledge of the reaction rates involving 26Al, its stable counterpart 27Al and 24Mg is then mandatory. …”
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868
Magnetic Fields Recorded by Chondrules Formed in Nebular Shocks
Published 2018“…Key words: magnetic fields, meteorites, meteors, meteoroids, protoplanetary disks, shock waves…”
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869
Survivability of Soil and Permafrost Microbial Communities after Irradiation with Accelerated Electrons under Simulated Martian and Open Space Conditions
Published 2018-08-01“…In addition, the results of the study indicate the possibility of maintaining terrestrial like life in the ice of Europa at a 10 cm depth for at least ~170 years or for at least 400 thousand years in open space within meteorites. It is established that bacteria in natural habitat has a much higher resistance to in situ irradiation with accelerated electrons when compared to their stability in pure isolated cultures. …”
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870
Spectroscopic Links among Giant Planet Irregular Satellites and Trojans
Published 2023-01-01“…Characterizing hydrated materials in the outer solar system may provide critical context regarding the origins of hydrated CI and CM chondrite meteorites. We discuss how the hydration state(s) of the irregular satellites constrains the thermal histories of the interiors of their parent bodies, which may have formed among the primordial Kuiper Belt.…”
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871
High-resolution X-Ray Spectroscopy of Interstellar Iron toward Cygnus X-1 and GX 339-4
Published 2024-01-01“…However, fayalite is disfavored, based on the implied abundances and knowledge of ISM silicates gained by infrared astronomical observations and meteoritic studies. We conclude that iron oxides in the Fe ^3+ oxidation state are good candidates for Fe-bearing dust. …”
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872
Analytical protocols for Phobos regolith samples returned by the Martian Moons eXploration (MMX) mission
Published 2021-06-01“…It should be noted that the Phobos regolith is expected to contain a small amount of materials delivered from Mars, which may be physically and chemically different from any Martian meteorites in our collection and thus are particularly precious. …”
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873
The Unusual Brightness Phase Curve of (65803) Didymos
Published 2024-01-01“…We propose that Didymos might be an LL ordinary chondrite analog containing albedo-suppressing, shock-darkened/impact melt minerals that have undergone resurfacing processes in the past. A comparison with meteorites indicates that, less likely, Didymos could also contain materials analog to carbon-bearing brecciated L3 ordinary chondrites.…”
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874
Unraveling the Cr Isotopes of Ryugu: An Accurate Aqueous Alteration Age and the Least Thermally Processed Solar System Material
Published 2024-01-01“…Despite accreting at different distances from the Sun, the hydrous asteroids (Ryugu and the parent bodies of CI, CM, CR, and ungrouped C2 meteorites) underwent aqueous alteration during a period of limited duration (3.8 ± 1.8 Myr after CAI). …”
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875
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876
The Prebiotic Kitchen: A Guide to Composing Prebiotic Soup Recipes to Test Origins of Life Hypotheses
Published 2021-11-01“…Examples of two assembled mixtures, one based on materials likely delivered by carbonaceous meteorites and one based on spark discharge synthesis, are presented to illustrate these challenges. …”
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877
Computational Surface Modelling of Ices and Minerals of Interstellar Interest—Insights and Perspectives
Published 2020-12-01“…Although we focus on water ice mantles and olivinic silicates as IS test case materials to exemplify the modelling procedures, a final discussion on the applicability of these approaches to simulate surfaces of other cosmic grain materials (e.g., cometary and meteoritic) is given.…”
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878
Grain size dependent high-pressure elastic properties of ultrafine micro/nanocrystalline grossular
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879
Special issue “Science of solar system materials examined from Hayabusa and future missions (II)”
Published 2017“…Discussions of new findings from the Hayabusa-returned samples and from a large collection of meteorites, micrometeorites, and interplanetary dust particles have continued, especially at the annual international Hayabusa symposia of solar system materials (Okada et al. 2015). …”
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880