Our goal is to describe atoms that represent element distribution of the Solar system that are continuously evolving from the beginning to the future. To understand the Solar system with spatial scale 1013 m, we analyze planetary materials that are from different origin with different processes, and determine element and isotope compositions with spatial resolution down to 10-9 m.

Planetary materials besides terrestrial ones are the rolling stones that are sampled with locality unknown. To fill the important missing information, we developed a protocol that is to determine multiple-elements, multiple-isotopes, and multiple-phases. We referred the approach to be 'comprehensive' and construct an analytical system that let us do so. The system acts as a gigantic machine with numerous instruments glued by analytical methods and disciplined people. The disciplines and samples would be taken over to the next generation to sustain our science.

We work as a team and prefer arguments scientifically.


We suggest that a rubble pile asteroid (Itokawa, Ryugu, or Bennu) was turned from a comet


On the 15th February (2013), a meteorite impacted Chelyabinsk state in Russia (see YouTube). It is referred to as the Chelyabinsk meteorite and was categorized as an ordinary chondrite. It has a genetic relationship to the asteroid Itokawa, which is also composed from fragments of ordinary chondrite.

We have applied our comprehensive analyses to the Chelyabinsk meteorite. ... Read More ... 続きを読む


Ota, T., Aihara, Y., Kiyokawa, S., Tanaka, R., Nakamura, E., Tourmaline in a Mesoarchean pelagic hydrothermal system: Implications for the habitat of early life., Precambrian Research, 2019.

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Feyissa, D.H., Kitagawa, H., Bizuneh, T.D., Tanaka, R., Kabeto, K., Nakamura, E., Transition from plume-driven to plate-driven magmatism in the evolution of the Main Ethiopian Rift, Journal of Petrology, 2019.

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Minde, M.W., Madland, M.V., Zimmermann, U., Egeland, N., Korsnes, R.I., Nakamura, E., Kobayashi, K., Ota, T., Sham, M., Mineralogical alterations in calcite powder flooded with MgCl2 to study Enhanced Oil Recovery (EOR) mechanisms at pore scale, Microporous and Mesoporous Materials, 2019.

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Steller, L.H., Nakamura, E., Ota, T., Sakaguchi, C., Sham, M., Van Kranendonk, M.J., Boron Isotopes in the Puga Geothermal System, India, and Their Implications for the Habitat of Early Life, Astrobiology, 19 (12), 2019.

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Sep. 10, 10:00 AM in 3F Seminar Room
Seminar by Dr. Yana Bychkova

Sep. 10, 10:00 AM in 3F Seminar Room
Seminar by Maya-Liliana Avramescu

Aug. 20, 10:00 AM in 3F Seminar Room
Seminar by Prof. Andrey Bychkov

Aug. 20, 10:00 AM in 3F Seminar Room
Seminar by Wenyuan Li

Aug. 6, 10:00 AM in 3F Seminar Room
Seminar by Nurcan Kucukarslan

Jul. 30, 10:00 AM in 3F Seminar Room
Seminar by Nghiem Van Dao

Jul. 23, 10:00 AM in 3F Seminar Room
Seminar by Christian Potiszil

Jul. 3, 10:00 AM in 3F Seminar Room
Seminar by Prof. Javier Martin-Torres and Prof. Maria-Paz Zorzano Mier (Group of Atmospheric science (GAS) at Luleå University of Technology)

Jun. 25, 10:00 AM in 3F Seminar Room
Seminar by Tulibako Mwaisuba Tulibonwya