X-ray analysis of Ryugu asteroid samples reveals hydration mechanism

A research team led by Kanazawa University and The University of Tokyo has analyzed material returned from the asteroid Ryugu and identified a poorly crystalline magnesium silicate hydrate-like component inside the space rock. The Brighter Side of News reported that the finding helps explain how the ancestral rocks of the asteroid underwent extensive chemical reactions with liquid water while simultaneously retaining their primary elemental compositions. [1]

Scientists had previously struggled to resolve how the parent body of Ryugu experienced widespread aqueous alteration without erasing initial chemical variations. Reactions with water typically dissolve and redistribute chemical elements throughout a geological body, which alters the original composition that researchers seek to reconstruct. The Brighter Side of News reported that the poorly crystalline material allowed these early chemical differences to remain intact despite fluid interaction. [1]

The researchers conducted powerful X-ray scans to examine the microstructures within the Ryugu samples. The same magnesium silicate hydrate-like component was also identified in carbonaceous meteorites examined during the study. A free-electron laser provides extremely high brilliance and ultra-short radiation pulses that allow scientists to probe complex material structures at microscopic scales. [1][2]

The full findings of the research team were published in the peer-reviewed journal Communications Earth and Environment. The discovery provides a clearer framework for analyzing how water interacted with primitive organic and mineral matter during the early history of the solar system. [1]