Takahito Hashimoto

TL;DR: Evidence of space weathering on particles returned from the S-type asteroid 25143 Itokawa by the Hayabusa spacecraft is reported and texture suggests formation by metamictization and in situ reduction of Fe2+.

TL;DR: In this article, the authors identified three types of surface modification probably formed by space weathering on the surfaces of Itokawa particles: redeposition rims, composite rims and composite vesicular rims.

TL;DR: In this article, the dynamical environment about and on Asteroid 25143 Itokawa is studied using the shape and rotation state model estimated during the close proximity phase of the Hayabusa mission to that asteroid.

TL;DR: In this article, a scanning transmission electron microscope (STEM) has an electron source for generating a primary electron beam and an electron illuminating lens system for converging the electron beam from the electron source onto a specimen for illumination.

TL;DR: A FIB micro-sampling technique has been developed to facilitate TEM specimen preparation while allowing samples to remain intact and a technique to prepare TEM specimens from a specific site has also been developed.