Chondritic meteorites (chondrites) contain evidence for the interaction of liquid water with
the interiors of small bodies early in Solar System history. Here we review the processes …

Preliminary analyses of asteroid Ryugu samples show kinship to aqueously altered CI
(Ivuna-type) chondrites, suggesting similar origins. We report identification of C-rich …

Chondrule-like objects and Ca-Al-rich inclusions (CAIs) are discovered in the retuned
samples from asteroid Ryugu. Here we report results of oxygen isotope, mineralogical, and …

The Hayabusa2 spacecraft explored asteroid Ryugu and brought its surface materials to
Earth. Ryugu samples resemble Ivuna-type (CI) chondrites—the most chemically primitive …

Parent bodies of C-type asteroids may have brought key volatile and organic-rich
compounds to the terrestrial planets in the early stages of the Solar System. At the end of …

Samples returned from the carbonaceous asteroid (162173) Ryugu by the Hayabusa2
mission revealed that Ryugu is composed of materials consistent with CI chondrites and …

Ryugu is a second-generation C-type asteroid formed by the reassembly of fragments of a
previous larger body in the main asteroid belt. While the majority of Ryugu samples returned …

Nucleosynthetic isotope anomalies of planetary materials provide insight into their genetic
ties, informing our understanding of early Solar System isotopic architecture and evolution …

Water activity recorded in asteroids offers a perspective on their habitability. Aqueous
alteration, namely the interaction of liquid water with minerals, occurred in the parent body of …

Cosmochemists have relied on CI carbonaceous chondrites as proxies for chemical
composition of the non‐volatile elements in the solar system because these meteorites are …