All chondrites accreted∼ 3.5 wt.% C in their matrices, the bulk of which was in a
macromolecular solvent and acid insoluble organic material (IOM). Similar material to IOM is …

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 near-Earth asteroid 162173 Ryugu, the target of the Hayabusa2 sample-return mission,
is thought to be a primitive carbonaceous object. We report reflectance spectra of Ryugu's …

There is a long-standing debate regarding the origin of the terrestrial planets' water as well
as the hydrated C-type asteroids. Here we show that the inner Solar System's water is a …

The small bodies of our solar system are the remnants of the early stages of planetary
formation. A considerable amount of information regarding the processes that occurred …

Before the origin of simple cellular life, the building blocks of RNA (nucleotides) had to form
and polymerize in favorable environments on early Earth. At this time, meteorites and …

Classification of meteorites is largely based on their mineralogical and petrographic
characteristics and their whole-rock chemical and O-isotopic compositions. According to the …

Context. The classification of the minor bodies of the Solar System based on observables
has been continuously developed and iterated over the past 40 yr. While prior iterations …

The main belt is believed to have originally contained an Earth mass or more of material,
enough to allow the asteroids to accrete on relatively short timescales. The present-day …

In this work we identify spectral similarities between asteroids and meteorites. Using spectral
features such as absorption bands and spectral curvature, we identify spectral matches …