Results 91 to 100 of about 12,511 (212)
The contamination of the surface of Vesta by impacts and the delivery of the dark material
, 2014 The Dawn spacecraft observed the presence of dark material, which in turn proved to be associated with OH and H-rich material, on the surface of Vesta. The source of this dark material has been identified with the low albedo asteroids, but it is still a ...
Combe, J. -P. +12 more
core +1 more source
The mineralogy and alteration history of the Yamato-type (CY) carbonaceous chondrites
, 2023 Martin D. Suttle +9 more
openalex +1 more source
Altitude Profile and Isotopic Composition for N2 From Pioneer Venus Mass Spectra
Geophysical Research Letters, Volume 52, Issue 23, 16 December 2025.Abstract We report the highest resolution altitude profile and isotopic composition for N2 at Venus, to date. These results were obtained through re‐analysis of data acquired by the Pioneer Venus Large Probe Neutral Mass Spectrometer (LNMS). The N2 is non‐uniformly mixed across the clouds and sub‐cloud atmosphere (∼59–15 km) yet uniformly mixed across ...
R. Mogul, S. S. Limaye, M. J. Way
wiley +1 more source
New Paradigms For Asteroid Formation
, 2015 Asteroids and meteorites provide key evidence on the formation of planetesimals in the Solar System. Asteroids are traditionally thought to form in a bottom-up process by coagulation within a population of initially km-scale planetesimals.
Cuzzi, Jeffrey N. +4 more
core +1 more source
Rapid Communications in Mass Spectrometry, Volume 39, Issue 23, 15 December 2025.ABSTRACT Background Obtaining isotopic data on soluble organic compounds, such as amino acids, in extraterrestrial samples is crucial for understanding their origins, prebiotic chemistry, and potential contamination. Conventional GC‐IRMS requires grams of material to measure isotopic compositions, limiting the analysis of low‐concentration organics in ...
O. M. McIntosh +9 more
wiley +1 more source
Testing the Bus–DeMeo Asteroid Taxonomy Using Meteorite Spectra
The Planetary Science JournalThe most widely used method to spectrally classify asteroids is the Bus–DeMeo taxonomy. To test how well the Bus–DeMeo taxonomy groups asteroids on the basis of their mineralogy, we have classified ∼1500 meteorite spectra using this Bus–DeMeo system ...
Thomas H. Burbine +5 more
doaj +1 more source
60Fe-60Ni chronology of core formation in Mars
, 2014 The timescales of accretion, core formation, and magmatic differentiation in planetary bodies can be constrained using extinct radionuclide systems. Experiments have shown that Ni becomes more siderophile with decreasing pressure, which is reflected in ...
Dauphas, Nicolas, Tang, Haolan
core +1 more source
Antarctic Intermediate Water Variability in the South Atlantic Over the Last 600,000 years
Paleoceanography and Paleoclimatology, Volume 40, Issue 12, December 2025.Abstract Despite its importance as a key component of the Atlantic Meridional Overturning Circulation, the long‐term variability of Antarctic Intermediate Water (AAIW) remains poorly constrained due to the lack of adequate proxy records. To address this, we present the longest reconstruction of AAIW variability in the South Atlantic using authigenic ...
Oluwaseun Soaga +5 more
wiley +1 more source
Oxychlorine Species on Mars: A Review
Reviews of Geophysics, Volume 63, Issue 4, December 2025.Abstract Oxychlorine species (mainly perchlorate and chlorate) have been identified at multiple locations on the surface of Mars by both orbiter and in situ rovers. They have also been found in martian meteorites. Cl‐isotopes in meteoritic minerals suggest that an oxychlorine cycle has been operating on the martian surface for the last ∼4 billion years.
Kaushik Mitra
wiley +1 more source