【Institute for Advanced Biosciences】 The Water-Rich Source of Chemical Evolution and Evidence of Hydrothermal Alteration n Asteroid Ryugu

2024.07.12

An international collaborative research group—including Principal Scientist Yoshinori Takano (Specially Appointed Associate Professor, IAB, Keio University) of the Japan Agency for Marine-Earth Science and Technology (JAMSTEC); Professor Hiroshi Naraoka of the Graduate School of Science, Kyushu University; and Principal Investigator Jason Dworkin of the National Aeronautics and Space Administration (NASA)—in collaboration with the IAB, Keio University; Human Metabolome Technologies, Inc.; Hokkaido University; Tohoku University; Hiroshima University; Nagoya University; Kyoto University; and the Graduate School of Science, The University of Tokyo, extracted soluble components contained in samples from asteroid Ryugu and conducted precise chemical analyses.

These analyses revealed the current state of chemical evolution and provided definitive evidence of hydrothermal alteration, identifying a total of 84 compounds—including water-affinity organic acids (newly identified monocarboxylic, dicarboxylic, and tricarboxylic acids, as well as hydroxy acids) and nitrogen-containing compounds.

This research was published in the scientific journal Nature Communications on July 10, 2024.

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The Water-Rich Source of Chemical Evolution and Evidence of Hydrothermal Alteration n Asteroid Ryugu