The current state and surface conditions of the Earth and its twin planet Venus are drastically
different. Whether these differences are directly inherited from the earliest stages of …

Studies of material returned from Cb asteroid Ryugu have revealed considerable
mineralogical and chemical heterogeneity, stemming primarily from brecciation 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 …

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 …

The isotopic compositions of samples returned from Cb-type asteroid Ryugu and Ivuna-type
(CI) chondrites are distinct from other carbonaceous chondrites, which has led to the …

Meteorites, and in particular primitive meteorites (chondrites), are irreplaceable probes of
the solar protoplanetary disk. We review their essential properties and endeavour to place …

Recent analyses of samples from asteroid (162173) Ryugu returned by JAXA's Hayabusa2
mission suggest that Ryugu and CI chondrites formed in the same region of the …

Organic matter in meteorites reveals clues about early Solar System chemistry and the origin
of molecules important to life, but terrestrial exposure complicates interpretation. Samples …

Elements with differing siderophile affinities provide insights into various stages of planetary
accretion. The isotopic anomalies they exhibit offer a deeper understanding of the materials …

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