We summarize mineralogical and compositional results from lab and in-situ spacecraft
investigations of samples of comets 81P/Wild 2 and 67P/Churyumov-Gerasimenko which …

Evaporation or freezing of water-rich fluids with dilute concentrations of dissolved salts can
produce brines, as observed in closed basins on Earth and detected by remote sensing on …

We report the H, C, and N isotopic compositions of microscale (0.2 to 2 µm) organic matter in
samples of asteroid Ryugu and the Orgueil CI carbonaceous chondrite. Three regolith …

Primordial carbon delivered to the early earth by asteroids and meteorites provided a
diverse source of extraterrestrial organics from pre-existing simple organic compounds …

We analyzed an asteroid Ryugu sample returned to Earth by JAXA's Hayabusa2 mission
using nanoIR, SEM, and TEM microscopy. We identified multiple distinct carbon reservoirs …

Abstract Previous Mars Reconnaissance Orbiter and Mars Express observations of Phobos
and Deimos, the moons of Mars, have improved our understanding of these small bodies …

Ryugu asteroid grains brought back to the Earth by the Hayabusa2 space mission are
pristine samples containing hydrated minerals and organic compounds. Here, we …

We present here an investigation of Ryugu particles recovered by the Hayabusa2 space
mission and their extracted carbonaceous acid residues using Raman spectroscopy. Raman …

Understanding the processes of aqueous alteration within primitive bodies is crucial for
unraveling the complex history of early planetesimals. To better identify the signs of this …

The main goal of this thesis is to explore the microstructure of meteorite and asteroid
fragments. Specifically, it focuses on samples from the Ryugu C-type asteroid, collected …