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Showing 1–4 of 4 results
Advanced filters: Author: Kohei Tsuchiyama Clear advanced filters

  • A close-up look at the action of space weathering on carbonaceous asteroids, provided by Ryugu’s returned samples, highlights its role on the dehydration of the first micrometre-thick layer of the surface, possibly hiding a water-rich interior. The depth of the 2.7 µm hydration band may be an indication of the level of space weathering withstood by a C-type asteroid.

    • Takaaki Noguchi
    • Toru Matsumoto
    • Yuichi Tsuda
    ResearchOpen Access
    Nature Astronomy
    Volume: 7, P: 170-181

  • The sample taken from carbonaceous asteroid Ryugu and brought back to Earth by the Hayabusa2 spacecraft contains outer Solar System-derived materials uncontaminated by terrestrial processes. Even CI carbonaceous chondrites, despite their closeness to solar abundances, are not pristine.

    • Motoo Ito
    • Naotaka Tomioka
    • Yuichi Tsuda
    ResearchOpen Access
    Nature Astronomy
    Volume: 6, P: 1163-1171