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Showing 1–5 of 5 results
Advanced filters: Author: R. Tsukizaki Clear advanced filters

  • Hayabusa2 created an artificial crater on Ryugu to analyse the subsurficial material of the asteroid. Results show that the subsurface is more hydrated than the surface. It experienced alteration processes that can be traced back to Ryugu’s parent body.

    • K. Kitazato
    • R. E. Milliken
    • Y. Tsuda
    Research
    Nature Astronomy
    Volume: 5, P: 246-250

  • 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 Hayabusa2 spacecraft found dark boulders with very high porosity (>70%, as high as cometary nuclei) at the bottom of small craters on Ryugu. Such boulders are probably the most pristine parts of the planetesimals that formed Ryugu’s parent body and might have been captured by Hayabusa2 sampling.

    • N. Sakatani
    • S. Tanaka
    • Y. Tsuda
    Research
    Nature Astronomy
    Volume: 5, P: 766-774

  • The Hayabusa2 team has discovered two types of bright boulder on the dark, carbonaceous asteroid Ryugu. One type has a spectrum consistent with material from an anhydrous silicate-rich asteroid, likely introduced by one or more collisions in Ryugu’s past.

    • E. Tatsumi
    • C. Sugimoto
    • M. Yoshikawa
    Research
    Nature Astronomy
    Volume: 5, P: 39-45

  • The Hayabusa2 spacecraft returned 5.4 g of material from the asteroid Ryugu. A first analysis of the samples found an estimated density of 1,282 ± 231 kg m−3, considerably lower than even the most porous meteorites. Together with preliminary spectral analysis, these results indicate that Ryugu is similar to CI chondrites, but darker, more porous and more brittle.

    • Toru Yada
    • Masanao Abe
    • Yuichi Tsuda
    ResearchOpen Access
    Nature Astronomy
    Volume: 6, P: 214-220