In May of 2011, NASA selected the O rigins, S pectral I nterpretation, R esource I
dentification, and S ecurity–R egolith Ex plorer (OSIRIS-REx) asteroid sample return mission …

The search for evidence of extraterrestrial life in our Solar System is currently guided by our
understanding of terrestrial biology and its associated biosignatures. The observed …

Carbonaceous meteorites are thought to be fragments of C-type (carbonaceous) asteroids.
Samples of the C-type asteroid (162173) Ryugu were retrieved by the Hayabusa2 …

Samples of the carbonaceous asteroid Ryugu were brought to Earth by the Hayabusa2
spacecraft. We analyzed 17 Ryugu samples measuring 1 to 8 millimeters. Carbon dioxide …

C-type asteroids are considered to be primitive small Solar System bodies enriched in water
and organics, providing clues to the origin and evolution of the Solar System and the …

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

Spacecraft observations revealed that rocks on carbonaceous asteroids, which constitute
the most numerous class by composition, can develop millimeter-to-meter-scale fractures …

The Hayabusa2 mission journeys to C-type near-Earth asteroid (162173) Ryugu (1999 JU
3) to observe and explore the 900 m-sized object, as well as return samples collected from …

The asteroid impact near the Russian city of Chelyabinsk on 15 February 2013 was the
largest airburst on Earth since the 1908 Tunguska event, causing a natural disaster in an …

Advances in the discovery and characterization of asteroids over the past decade have
revealed an unanticipated underlying structure that points to a dramatic early history of the …