The isotopic composition of meteorites and terrestrial planets holds important clues about
the earliest history of the Solar System and the processes of planet formation. Recent work …

The isotopic dichotomy between non-carbonaceous (NC) and carbonaceous (CC)
meteorites indicates that meteorite parent bodies derive from two genetically distinct …

Little is known about the origin of the spectral diversity of asteroids and what it says about
conditions in the protoplanetary disk. Here, we show that samples returned from Cb-type …

The formation of planetesimals is expected to occur via particle-gas instabilities that
concentrate dust into self-gravitating clumps,–. Triggering these instabilities requires the …

The origin of life on Earth seems to demand a highly reduced early atmosphere, rich in CH
4, H 2, and NH 3, but geological evidence suggests that Earth's mantle has always been …

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 …

Understanding the nature and origin of the precursor material to terrestrial planets is key to
deciphering the mechanisms and timescales of planet formation. Nucleosynthetic variability …

Determining the provenance of volatile elements in Earth is key for understanding the
processes that led to its formation as a habitable planet. We show that the moderately …

Initial analyses showed that asteroid Ryugu's composition is close to CI (Ivuna-like)
carbonaceous chondrites (CCs)–the chemically most primitive meteorites, characterized by …

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 …