Pebbles and sand on asteroid (162173) Ryugu: In situ observation and particles returned to Earth

Shogo Tachibana; Hirotaka Sawada; Ryuji Okazaki; Yoshinori Takano; Kanako Sakamoto; Yayoi N. Miura; Chisato Okamoto; Hajime Yano; S. Yamanouchi; Patrick Michel; Yun Zhang; S. R. Schwartz; Florian Thuillet; Hisayoshi Yurimoto; Tomoki Nakamura; T. Noguchi; Hikaru Yabuta; Hiroshi Naraoka; A. Tsuchiyama; Naoya Imae; Kosuke Kurosawa; A. Nakamura; Kazunori Ogawa; Seiji Sugita; Tomokatsu Morota; Rie Honda; Shingo Kameda; Eri Tatsumi; Yuichiro Cho; Kazuo Yoshioka; Y. Yokota; Masahiko Hayakawa; M. Matsuoka; Naoya Sakatani; Manabu Yamada; Toru Kouyama; Hidehiko Suzuki; Chikatoshi Honda; Tetsuo Yoshimitsu; Takuji Kubota; H. Demura; Toru Yada; Masahiro Nishimura; Kasumi Yogata; Aiko Nakato; Miwa Yoshitake; Ayako Suzuki; Shizuho Furuya; Kentaro Hatakeda; Akiko Miyazaki; Kazuya Kumagai; Tatsuaki Okada; Masanao Abe; Tomohiro Usui; T. R. Ireland; M. Fujimoto; Tetsuya Yamada; Masahiko Arakawa; H. C. Connolly; Atsushi Fujii; Sunao Hasegawa; Naoyuki Hirata; Naru Hirata; Chikako Hirose; S Hosoda; Y. Iijima; Hitoshi Ikeda; Masateru Ishiguro; Yoshiaki Ishihara; Takahiro Iwata; Shota Kikuchi; K. Kitazato; D. S. Lauretta; G. Libourel; Bernard Marty; Koji Matsumoto; Tatsuhiro Michikami; Yuya Mimasu; Akira Miura; Osamu Mori; K. Nakamura‐Messenger; Noriyuki Namiki; A. N. Nguyen; L. R. Nittler; Hirotomo Noda; Rina Noguchi; Naoko Ogawa; Go Ono; Masanobu Ozaki; Hiroki Senshu; Takanobu Shimada; Yuri Shimaki; K. Shirai; Stefania Soldini; T. Takahashi; Yuto Takei; Hiroshi Takeuchi; Ryudo Tsukizaki; Koji Wada; Yukio Yamamoto; Kent Yoshikawa; Koki Yumoto; M. E. Zolensky; Satoru Nakazawa; Fuyuto Terui; Satoshi Tanaka; Takanao Saiki; Makoto Yoshikawa; Sei‐ichiro Watanabe; Yuichi Tsuda

doi:10.1126/science.abj8624

Pebbles and sand on asteroid (162173) Ryugu: In situ observation and particles returned to Earth

Shogo Tachibana(Planetary Science Institute), Hirotaka Sawada(Japan Aerospace Exploration Agency), Ryuji Okazaki(Kyushu University), Yoshinori Takano(Japan Agency for Marine-Earth Science and Technology), Kanako Sakamoto(Planetary Science Institute), Yayoi N. Miura(The University of Tokyo), Chisato Okamoto(Kobe University), Hajime Yano(Japan Aerospace Exploration Agency), S. Yamanouchi(Kyushu University), Patrick Michel(Observatoire de la Côte d’Azur), Yun Zhang(Observatoire de la Côte d’Azur), S. R. Schwartz(Planetary Science Institute), Florian Thuillet(Observatoire de la Côte d’Azur), Hisayoshi Yurimoto(Hokkaido University), Tomoki Nakamura(Tohoku University), T. Noguchi(Kyushu University), Hikaru Yabuta(Hiroshima University), Hiroshi Naraoka(Kyushu University), A. Tsuchiyama(Ritsumeikan University), Naoya Imae(National Institute of Polar Research), Kosuke Kurosawa(Chiba Institute of Technology), A. Nakamura(Kobe University), Kazunori Ogawa(Japan Aerospace Exploration Agency), Seiji Sugita(Planetary Science Institute), Tomokatsu Morota(Planetary Science Institute), Rie Honda(Kōchi University), Shingo Kameda(Rikkyo University), Eri Tatsumi(Planetary Science Institute), Yuichiro Cho(Planetary Science Institute), Kazuo Yoshioka(Planetary Science Institute), Y. Yokota(Japan Aerospace Exploration Agency), Masahiko Hayakawa(Japan Aerospace Exploration Agency), M. Matsuoka(Japan Aerospace Exploration Agency), Naoya Sakatani(Rikkyo University), Manabu Yamada(Chiba Institute of Technology), Toru Kouyama(National Institute of Advanced Industrial Science and Technology), Hidehiko Suzuki(Meiji University), Chikatoshi Honda(University of Aizu), Tetsuo Yoshimitsu(Japan Aerospace Exploration Agency), Takuji Kubota(Japan Aerospace Exploration Agency), H. Demura(University of Aizu), Toru Yada(Japan Aerospace Exploration Agency), Masahiro Nishimura(Japan Aerospace Exploration Agency), Kasumi Yogata(Japan Aerospace Exploration Agency), Aiko Nakato(Japan Aerospace Exploration Agency), Miwa Yoshitake(Japan Aerospace Exploration Agency), Ayako Suzuki(Toyo University), Shizuho Furuya(Planetary Science Institute), Kentaro Hatakeda(Japan Steel Works (Japan)), Akiko Miyazaki(Japan Aerospace Exploration Agency), Kazuya Kumagai(Japan Steel Works (Japan)), Tatsuaki Okada(Japan Aerospace Exploration Agency), Masanao Abe(The Graduate University for Advanced Studies, SOKENDAI), Tomohiro Usui(Japan Aerospace Exploration Agency), T. R. Ireland(The University of Queensland), M. Fujimoto(Japan Aerospace Exploration Agency), Tetsuya Yamada(Japan Aerospace Exploration Agency), Masahiko Arakawa(Kobe University), H. C. Connolly(University of Arizona), Atsushi Fujii(Japan Aerospace Exploration Agency), Sunao Hasegawa(Japan Aerospace Exploration Agency), Naoyuki Hirata(University of Aizu), Naru Hirata(University of Aizu), Chikako Hirose(National Sagamihara Hospital), S Hosoda(Japan Aerospace Exploration Agency), Y. Iijima(Japan Aerospace Exploration Agency), Hitoshi Ikeda(Japan Aerospace Exploration Agency), Masateru Ishiguro(Seoul National University), Yoshiaki Ishihara(Japan Aerospace Exploration Agency), Takahiro Iwata(The Graduate University for Advanced Studies, SOKENDAI), Shota Kikuchi(Japan Aerospace Exploration Agency), K. Kitazato(University of Aizu), D. S. Lauretta(University of Arizona), G. Libourel(Observatoire de la Côte d’Azur), Bernard Marty(Centre de Recherches Pétrographiques et Géochimiques), Koji Matsumoto(The Graduate University for Advanced Studies, SOKENDAI), Tatsuhiro Michikami(Kindai University), Yuya Mimasu(Japan Aerospace Exploration Agency), Akira Miura(The Graduate University for Advanced Studies, SOKENDAI), Osamu Mori(Japan Aerospace Exploration Agency), K. Nakamura‐Messenger(Johnson Space Center), Noriyuki Namiki(The Graduate University for Advanced Studies, SOKENDAI), A. N. Nguyen(Johnson Space Center), L. R. Nittler(Carnegie Institution for Science), Hirotomo Noda(The Graduate University for Advanced Studies, SOKENDAI), Rina Noguchi(Japan Aerospace Exploration Agency), Naoko Ogawa(Japan Aerospace Exploration Agency), Go Ono(National Sagamihara Hospital), Masanobu Ozaki(The Graduate University for Advanced Studies, SOKENDAI), Hiroki Senshu(Chiba Institute of Technology), Takanobu Shimada(Japan Aerospace Exploration Agency), Yuri Shimaki(Japan Aerospace Exploration Agency), K. Shirai(Japan Aerospace Exploration Agency), Stefania Soldini(University of Liverpool), T. Takahashi(NEC (Japan)), Yuto Takei(Japan Aerospace Exploration Agency), Hiroshi Takeuchi(The Graduate University for Advanced Studies, SOKENDAI), Ryudo Tsukizaki(Japan Aerospace Exploration Agency), Koji Wada(Chiba Institute of Technology), Yukio Yamamoto(The Graduate University for Advanced Studies, SOKENDAI), Kent Yoshikawa(National Sagamihara Hospital), Koki Yumoto(Planetary Science Institute), M. E. Zolensky(Johnson Space Center), Satoru Nakazawa(Japan Aerospace Exploration Agency), Fuyuto Terui(Japan Aerospace Exploration Agency), Satoshi Tanaka(The Graduate University for Advanced Studies, SOKENDAI), Takanao Saiki(Japan Aerospace Exploration Agency), Makoto Yoshikawa(The Graduate University for Advanced Studies, SOKENDAI), Sei‐ichiro Watanabe(Nagoya University), Yuichi Tsuda(Vaughn College of Aeronautics and Technology)

Science

March 3, 2022

10.1126/science.abj8624

Cited by 184

Abstract

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.

Related Papers

No related papers found

Powered by citation graph analysis