气候变化领域集成服务门户(CCPortal): Sample collection from asteroid (162173) Ryugu by Hayabusa2: Implications for surface evolution

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DOI	10.1126/science.aaz6306
	Sample collection from asteroid (162173) Ryugu by Hayabusa2: Implications for surface evolution
	Morota T.; Sugita S.; Cho Y.; Kanamaru M.; Tatsumi E.; Sakatani N.; Honda R.; Hirata N.; Kikuchi H.; Yamada M.; Yokota Y.; Kameda S.; Matsuoka M.; Sawada H.; Honda C.; Kouyama T.; Ogawa K.; Suzuki H.; Yoshioka K.; Hayakawa M.; Hirata N.; Hirabayashi M.; Miyamoto H.; Michikami T.; Hiroi T.; Hemmi R.; Barnouin O.S.; Ernst C.M.; Kitazato K.; Nakamura T.; Riu L.; Senshu H.; Kobayashi H.; Sasaki S.; Komatsu G.; Tanabe N.; Fujii Y.; Irie T.; Suemitsu M.; Takaki N.; Sugimoto C.; Yumoto K.; Ishida M.; Kato H.; Moroi K.; Domingue D.; Michel P.; Pilorget C.; Iwata T.; Abe M.; Ohtake M.; Nakauchi Y.; Tsumura K.; Yabuta H.; Ishihara Y.; Noguchi R.; Matsumoto K.; Miura A.; Namiki N.; Tachibana S.; Arakawa M.; Ikeda H.; Wada K.; Mizuno T.; Hirose C.; Hosoda S.; Mori O.; Shimada T.; Soldini S.; Tsukizaki R.; Yano H.; Ozaki M.; Takeuchi H.; Yamamoto Y.; Okada T.; Shimaki Y.; Shirai K.; Iijima Y.; Noda H.; Kikuchi S.; Yamaguchi T.; Ogawa N.; Ono G.; Mimasu Y.; Yoshikawa K.; Takahashi T.; Takei Y.; Fujii A.; Nakazawa S.; Terui F.; Tanaka S.; Yoshikawa M.; Saiki T.; Watanabe S.; Tsuda Y.
发表日期	2020
ISSN	0036-8075
起始页码	654
结束页码	659
卷号	368 期号:6491
英文摘要	The near-Earth asteroid (162173) Ryugu is thought to be a primitive carbonaceous object that contains hydrated minerals and organic molecules. We report sample collection from Ryugu’s surface by the Hayabusa2 spacecraft on 21 February 2019. Touchdown images and global observations of surface colors are used to investigate the stratigraphy of the surface around the sample location and across Ryugu. Latitudinal color variations suggest the reddening of exposed surface material by solar heating and/or space weathering. Immediately after touchdown, Hayabusa2’s thrusters disturbed dark, fine grains that originate from the redder materials. The stratigraphic relationship between identified craters and the redder material indicates that surface reddening occurred over a short period of time. We suggest that Ryugu previously experienced an orbital excursion near the Sun. © 2020 American Association for the Advancement of Science. All rights reserved.
关键词	asteroid heating solar system spacecraft stratigraphy weathering profile article grain heating space flight stratigraphy sun weathering
语种	英语
来源机构	Science
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/133512
推荐引用方式 GB/T 7714	Morota T.,Sugita S.,Cho Y.,et al. Sample collection from asteroid (162173) Ryugu by Hayabusa2: Implications for surface evolution[J]. Science,2020,368(6491).
APA	Morota T..,Sugita S..,Cho Y..,Kanamaru M..,Tatsumi E..,...&Tsuda Y..(2020).Sample collection from asteroid (162173) Ryugu by Hayabusa2: Implications for surface evolution.,368(6491).
MLA	Morota T.,et al."Sample collection from asteroid (162173) Ryugu by Hayabusa2: Implications for surface evolution".368.6491(2020).