Without a protective atmosphere, space-exposed surfaces of airless Solar System bodies
gradually experience an alteration in composition, structure and optical properties through a …

The pristine sample from the near-Earth carbonaceous asteroid (162173) Ryugu collected
by the Hayabusa2 spacecraft enabled us to analyze the pristine extraterrestrial material …

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 …

Samples from asteroid Ryugu returned by the Hayabusa2 mission contain evidence of
extensive alteration by aqueous fluids and appear related to the CI chondrites. To …

Abstract On September 24, 2023, NASA's OSIRIS‐REx mission dropped a capsule to Earth
containing~ 120 g of pristine carbonaceous regolith from Bennu. We describe the delivery …

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 …

Simple Summary Organic matter is an integral part of all living things on our planet, but
abiotic (not relating to life) organic matter can be found throughout the Solar System within …

The hot water and acid extracts of two different Ryugu samples collected by the Hayabusa2
mission were analyzed for the presence of aliphatic amines and amino acids. The …

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 …

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