Pulse Brain · Growing Health Evidence Index
Tier 3 — Observational / field trialPeer-reviewed

Formation and evolution of carbonaceous asteroid Ryugu: Direct evidence from returned samples

Tomoki Nakamura, Megumi Matsumoto, Kana Amano, Yuma Enokido, M. E. Zolensky, T. Mikouchi, Hidenori Genda, Satoshi Tanaka, M. Yu. Zolotov, Kosuke Kurosawa, Shigeru Wakita, Ryuki Hyodo, Hosei Nagano, D. Nakashima, Yoshio Takahashi, Yuri Fujioka, Mizuha Kikuiri, Eiichi Kagawa, M. Matsuoka, A. J. Brearley, A. Tsuchiyama, Masayuki Uesugi, Junya Matsuno, Yuki Kimura, Masahiko Sato, R. E. Milliken, Eri Tatsumi, Seiji Sugita, T. Hiroi, K. Kitazato, D. E. Brownlee, D. J. Joswiak, Masaki Takahashi, Kazuhiko Ninomiya, Tadayuki Takahashi, Takahito Osawa, Kentaro Terada, Frank E. Brenker, B. J. Tkalcec, László Vincze, R. Brunetto, Alice Aléon‐Toppani, Q. H. S. Chan, Mathieu Roskosz, Jean‐Christophe Viennet, Pierre Beck, E. E. Alp, Tatsuhiro Michikami, Yuuya Nagaashi, Takeshi Tsuji, Yuta Ino, J. Martinez, J. Han, Andrei Dolocan, Robert J. Bodnar, M. Tanaka, Hideto Yoshida, K. Sugiyama, A. J. King, Keisuke Fukushi, Hiroki Suga, Shohei Yamashita, T. Kawai, Kumiko Inoue, Aiko Nakato, T. Noguchi, F. Vilas, Amanda Hendrix, Camilo Jaramillo, D. L. Domingue, G. Domínguez, Z. Gainsforth, C. Engrand, J. Duprat, S. S. Russell, Enrica Bonato, Chi Ma, Tatsuhiko Kawamoto, Takehiko Wada, Sei‐ichiro Watanabe, Rie Endo, Satomi Enju, Lucie Riu, Stefano Rubino, Pieter Tack, Soshi Takeshita, Yasuo Takeichi, Akihisa Takeuchi, Aki Takigawa, D. Takir, Toshiaki Tanigaki, Atsushi Taniguchi, Katsuo Tsukamoto, Takashi Yagi, S. Yamada, Kazuo Yamamoto, Yuichiro Yamashita, Masahiro Yasutake, Kentaro Uesugi, Izumi Umegaki

Science · 2022

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Summary

This paper presents detailed mineralogical and geochemical analysis of samples returned from carbonaceous asteroid Ryugu by the Hayabusa2 spacecraft. The samples are dominated by low-temperature aqueous alteration products (phyllosilicates and carbonates) with minimal high-temperature materials, and contain CO₂-bearing water inclusions indicating formation in the outer Solar System. Numerical modelling based on sample properties constrains Ryugu's parent body formation to approximately 2 million years after Solar System inception.

UK applicability

This research is not applicable to UK farming systems, soil health, or agricultural nutrition. It is fundamental planetary science concerning early Solar System formation and does not address terrestrial food production or human dietary outcomes.

Key measures

Mineralogical composition (phyllosilicates, carbonates, chondrules, olivine, pyroxene); water/rock mass ratios; formation temperature and pH conditions; parent body formation age relative to Solar System formation

Outcomes reported

This paper reports mineralogical and chemical analysis of 17 samples from carbonaceous asteroid Ryugu, revealing evidence of aqueous alteration and constraining the formation timeline of the parent body.

Theme
General food systems / other
Subject
Other / interdisciplinary
Study type
Research
Study design
Laboratory analysis and numerical modelling
Source type
Peer-reviewed study
Status
Published
System type
Other
DOI
10.1126/science.abn8671
Catalogue ID
BFmokjnswo-6fgi88

Topic tags

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