Results 131 to 140 of about 90,199 (336)
Meteoritics &Planetary Science, Volume 60, Issue 3, Page 646-662, March 2025.Abstract Samples of impactite from the small (~350 m diameter) Monturaqui crater in northern Chile contain Fe‐Ni metallic spherules sourced from the iron meteorite impactor. Textural characterization and quantification were done using SEM and μCT data. Two textural types are distinguished, with different size distributions.
Daniel O. Cukierski +5 more
wiley +1 more source
The Astrophysical JournalUnderstanding the impact of baryonic feedback on the small-scale ( k ≳ 1 h Mpc ^−1 ) matter power spectrum is a key astrophysical challenge, and essential for interpreting data from upcoming weak-lensing surveys, which require percent-level accuracy to ...
Kritti Sharma +5 more
doaj +1 more source
Meteoritics &Planetary Science, EarlyView.Abstract Multiple generations of calcite and dolomite precipitated in CM chondrites during ice melting events that led to episodes of liquid water. Models and laboratory analysis have suggested a long‐term transition from oxidizing to reducing conditions during aqueous alteration on the CM parent body.
Elizabeth Bailey +3 more
wiley +1 more source
Physics of Primordial Universe
, 2003 The physical basis of the modern cosmological inflationary models with baryosynthesis and nonbaryonic dark matter and energy implies such predictions of particle theory, that, in turn, apply to cosmology for their test. It makes physics of early Universe
Khlopov, Maxim Yu.
core +2 more sources
Variation of the constants in the late and early universe
, 2004 Recent key observational results on the variation of fine structure constant, the proton to electron mass ratio and the gravitational constant are reviewed.
Uzan, Jean-Philippe
core +1 more source
Magnesium phosphate in the Cold Bokkeveld (CM2) carbonaceous chondrite
Meteoritics &Planetary Science, EarlyView.Abstract Hydrous Mg‐phosphate was first described from astromaterials in particles returned from the C‐type asteroid Ryugu, and has subsequently been found in samples of the B‐type asteroid Bennu and CI1 carbonaceous chondrites. This phase may have been highly significant as a source of bioessential compounds for early Earth.
Martin R. Lee +2 more
wiley +1 more source
Meteoritics &Planetary Science, EarlyView.Abstract Dating rocks with a 2σ precision of 200 Ma is required to understand the history of Martian habitability and volcanic activity since ~4000 Ma. In situ K‐Ar dating using a spot‐by‐spot laser ablation technique has been developed for isochron dating on Mars.
Hikaru Hyuga +4 more
wiley +1 more source
Perturbed Spherically Symmetric Dust Solution of the Field Equations in Observational Coordinates with Cosmological Data Functions [PDF]
, 2001 M. E. Araújo +2 more
openalex +1 more source
Meteoritics &Planetary Science, EarlyView.Abstract Brachinites are a group of ultramafic achondritic meteorites thought to sample a planetesimal from the early inner solar system. They yield predominately ancient crystallization ages within 4 Ma of CAI formation, and while the formation mechanism for these samples is debated, they are widely thought to be partial melt residues from a ...
L. F. White +7 more
wiley +1 more source
The Astrophysical JournalWe present a new empirical Type Ia supernova (SN Ia) model with three chromatic flux variation templates: one phase dependent and two phase independent. No underlying dust extinction model or patterns of intrinsic variability are assumed.
Jared Hand +38 more
doaj +1 more source