Initial analysis of the asteroid probe “Hayabusa2” Rock material analysis team Publication of research results in the scientific journal “Science” – KEK | High Energy Accelerator Research Institute

Japan Aerospace Exploration Agency

Tohoku University

High Energy Accelerator Research Institute

J-PARC Centre

Synchrotron Radiation Research Centre

Hokkaido University

Kyoto University

Kyushu University

Hiroshima University

University of Tokyo

At the Japan Aerospace Exploration Agency (JAXA), the Ryugu asteroid sample analysis is being conducted by the “Hayabusa2 Initial Analysis Team” which consists of six sub-teams and two “Phase-2 curation agencies”. A paper summarizing the research results of the “Stone Material Analysis Team” of the “Hayabusa2 Initial Analysis Team” was published in the American scientific journal “Science” on September 23, 2022 (Japan time).

Title: Formation and evolution of the carbonaceous asteroid Ryugu: Evidence from return samples
Description: Formation and evolution of the carbonaceous asteroid Ryugu: Direct evidence
of returned samples
Publication: Science
DOI: 10.1126/science.abn8671
Publication date: September 23, 2022 (Friday) at 3:00 a.m. Japan time (online publication)

Ryugu samples returned to Earth by the Hayabusa2 asteroid probe on December 6, 2020 were initially described (Phase-1 curation) at the facility established at JAXA’s Space and Space Science Institute. A portion of the samples were distributed to the “Hayabusa2 Initial Analysis Team” which consists of six sub-teams and two “Phase-2 Curation Agencies”. The initial analysis team will be divided into specialist sub-teams to achieve the scientific objectives of Hayabusa2, and the multifaceted value of the sample will be clarified through a planned high-precision analysis. Step-2 The curatorial organization creates individual “Hayabusa2 particles” catalogs based on the “comprehensive analysis” characteristic of each one, and at the same time, by measuring and analyzing according to the characteristics of the particles, Revealing value possible.

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