Communications Earth & Environment 4(1) Sep 2023
Abstract
Returned samples from Cb-type asteroid (162173) Ryugu exhibit very dark spectra in visible and near-infrared ranges, generally consistent with the Hayabusa2 observations. A critical difference is that a structural water absorption of hyd...
The zodiacal light (ZL) is sunlight scattered by interplanetary dust (IPD) in the optical wavelengths. The spatial distribution of IPD in the Solar system may hold an important key to understanding the evolution of the Solar system and ...
Without a protective atmosphere, space-exposed surfaces of airless Solar System bodies gradually experience an alteration in composition, structure and optical properties through a collective process called space weathering. The return o...
Nature Astronomy 6(10) 1163-1171 Aug 2022 [Refereed]
Abstract
Volatile and organic-rich C-type asteroids may have been one of the main sources of Earth’s water. Our best insight into their chemistry is currently provided by carbonaceous chondritic meteorites, but the meteorite record is biased: onl...
Monthly Notices of the Royal Astronomical Society 514(4) 6173-6182 Aug 2022 [Refereed]
The JAXA Hayabusa2 mission accomplished the formation of an artificial crater on the asteroid Ryugu. The aim of this work is to analyse the area surrounding the artificial crater and reveal spectral variability compared to the same region before t...
Lunar gravity and geodesy mapping by KAGUYA mission and the origin of lunar dichotomyJapan Society for the Promotion of Science: Grants-in-Aid for Scientific ResearchSASAKI Sho HANADA Hideo ARAKI Hiroshi MATSUMOTO Koji NODA Hirotomo KAWANO Nobuyuki IWATA Takahiro HARUYAMA Junichi OTAKE Makiko MATSUNAGA Tsuneo NAMIKI Noriyuki DEMURA Hirohide YAMAGUCHI Yasushi YAMAJI Atsushi