Abstract Space weathering refers to alteration that occurs in the space environment with
time. Lunar samples, and to some extent meteorites, have provided a benchmark for …

A number of distinct methodologies are available for determining the oxygen isotope
composition of minerals and rocks, these include laser-assisted fluorination, secondary ion …

The Dawn spacecraft targeted 4 Vesta, believed to be a remnant intact protoplanet from the
earliest epoch of solar system formation, based on analyses of howardite-eucrite-diogenite …

The Dawn mission journeys to the center of the main asteroid belt to orbit and explore the
two most massive main belt asteroids, Vesta and Ceres. Dawn aims to increase our …

The Dawn mission has provided new evidence strengthening the identification of asteroid
Vesta as the parent body of the howardite, eucrite, and diogenite (HED) meteorites. The …

Vesta is a large differentiated rocky body in the main asteroid belt that accreted within the
first few million years after the formation of the earliest solar system solids. The Dawn …

Using Dawn's Gamma Ray and Neutron Detector, we tested models of Vesta's evolution
based on studies of howardite, eucrite, and diogenite (HED) meteorites. Global Fe/O and …

The field of asteroid thermophysical modeling has experienced an extraordinary growth in
the last 10 years, as new thermal-infrared data became available for hundreds of thousands …

Dawn's global map** of Vesta reveals that its observed south polar depression is
composed of two overlap** giant impact features. These large basins provide exceptional …

Meteorites contain relict decay products of short-lived radionuclides that were present in the
protoplanetary disk when asteroids and planets formed. Several studies reported a high …