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

Abstract NASA'S Origins, Spectral Interpretation, Resource Identification and Security-
Regolith Explorer (OSIRIS-REx) spacecraft recently arrived at the near-Earth asteroid …

Early spectral data from the Origins, Spectral Interpretation, Resource Identification, and
Security-Regolith Explorer (OSIRIS-REx) mission reveal evidence for abundant hydrated …

Establishing the abundance and physical properties of regolith and boulders on asteroids is
crucial for understanding the formation and degradation mechanisms at work on their …

INTRODUCTION The color and reflectance of asteroids can be used to infer their
compositions and histories. Variations in these spectrophotometric properties are driven by …

INTRODUCTION Carbonaceous asteroids formed early in Solar System history and
experienced varying degrees of aqueous (water-rock) and thermal alteration. Most models …

This paper summarizes the evidence for the optical effects of space weathering, as well as
the properties of the surface that control optical changes, on asteroid (101955) Bennu. First …

The samples returned from asteroid Ryugu were collected both at its surface and at its
subsurface by Hayabusa2 and can, thus, provide information on the space weathering of C …

Abstract Many boulders on (101955) Bennu, a near‐Earth rubble pile asteroid, show signs
of in situ disaggregation and exfoliation, indicating that thermal fatigue plays an important …

We performed H+ and He+ irradiation experiments on slabs of the Murchison CM2 meteorite
to simulate solar wind irradiation of carbonaceous asteroids. Two separate 6 mm× 6 mm …