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My research interest is the interior structure and the evolution of solid planets and satellites. I am an Interdisciplinary Scientist of the BepiColombo mission to Mercury, a Principal Investigator of the Hayabusa2# extended mission to asteroids, a Co-Investigator of the MMX mission to the Martial satellites, a Research Associate of the JUICE mission to the icy Jovian satellites, a Mission Collaborator of the Dragonfly mission to the Titan, and a Science Collaborator of the New Horizons mission to the Pluto system and Kuiper belt objects.


Science Bldg. 8-2-07, Hokkaido University, Kita-10 Nishi-8, Kita-ku, Sapporo, Hokkaido, 060-0810, Japan



Our paper titled "Pluto's ocean is capped and insulated by gas hydrates" has been published in Nature Geoscience on May 20th, 2019. The press release of this work from Hokkaido University can be found here. This work is selected as one of Research Highlights by the publisher Springer Nature and is reported by many news media. Please read articles below:
PBS NOVA (US), Courthouse News (US), BBC Sky at Night Magazine (UK), Gizmodo (US), Cosmos Magazine (Austraria), Popular Science (US), Chemistry World (UK), Weekendavisen (Danish), Asia Research News (UK)

Research projects

Card image cap Courtesy NASA/JPL/SSI
Icy Satellites
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Card image cap Courtesy NASA
The Moon
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Card image cap Courtesy NASA/JHUAPL/SwRI
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