Ph.D. in Mineralogy from University of Tokyo in 1988, specializing in asteroid-meteorite spectroscopy. After finishing a 2-year JSPS postdoctoral fellowship, moved to USA as a visiting scholar at Brown University funded by Yamada Science Foundation in 1990. From 1991 to 1994, National Research Council Resident Research Associate at NASA Johnson Space Center. Currently, working as the operator at NASA multiuser facility RELAB at Brown University. In 2000, asteroid 4887 Takihiroi was named for the contribution to meteoritics. Participated in Japanese planetary spacecraft missions of Hayabusa, Kaguya, and Hayabusa2 as a coinvestigator of science instruments. In 2017, appeared in NHK Cosmic Front Next program “Miracle Meteorite”. About twice a year, giving lectures at Japanese high schools and other places.
