This review presents our understanding of cometary dust at the end of 2017. For decades,
insight about the dust ejected by nuclei of comets had stemmed from remote observations …

Chondrules are iconic sub-millimeter spheroids representing the most abundant high-
temperature dust formed during the evolution of the circumsolar disk. Chondrules have been …

The delivery of water to the inner Solar System, including Earth, is still a debated topic. A
preferential role for hydrated asteroids in this process is supported by isotopic …

Knowledge of the nucleosynthetic isotope composition of the outermost protoplanetary disk
is critical to understand the formation and early dynamical evolution of the Solar System. We …

Deciphering the spatial and temporal evolution of chondrules allows for a better
understanding of how asteroidal seeds formed, migrated, and eventually accreted into …

The extraterrestrial materials returned from asteroid (162173) Ryugu consist predominantly
of low-temperature aqueously formed secondary minerals and are chemically and …

CI chondrites have nonvolatile chemical compositions closely resembling that of the Sun's
photosphere and are thus considered to have the most primitive compositions of all known …

We report microscopic, cathodoluminescence, chemical, and O isotopic measurements of
FeO‐poor isolated olivine grains (IOG) in the carbonaceous chondrites Allende (CV3) …

Comet dust is primitive and shows significant diversity. Our knowledge of the properties of
primitive cometary particles has expanded significantly through microscale investigations of …

Al-Mg isotope systematics of twelve FeO-poor (type I) chondrules from CR chondrites Queen
Alexandra Range 99177 and Meteorite Hills 00426 were investigated by secondary ion …