2022年3月4日
Pebbles and sand on asteroid (162173) Ryugu: In situ observation and particles returned to Earth
Science
- 巻
- 375
- 号
- 6584
- 開始ページ
- 1011
- 終了ページ
- 1016
- 記述言語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1126/science.abj8624
The Hayabusa2 spacecraft investigated the C-type (carbonaceous) asteroid (162173) Ryugu. The mission performed two landing operations to collect samples of surface and subsurface material, the latter exposed by an artificial impact. We present images of the second touchdown site, finding that ejecta from the impact crater was present at the sample location. Surface pebbles at both landing sites show morphological variations ranging from rugged to smooth, similar to Ryugu’s boulders, and shapes from quasi-spherical to flattened. The samples were returned to Earth on 6 December 2020. We describe the morphology of >5 grams of returned pebbles and sand. Their diverse color, shape, and structure are consistent with the observed materials of Ryugu; we conclude that they are a representative sample of the asteroid.
- リンク情報
- ID情報
-
- DOI : 10.1126/science.abj8624
- ISSN : 0036-8075
- eISSN : 1095-9203
- PubMed ID : 35143255
- SCOPUS ID : 85125682760