Space environment of an asteroid preserved on micrograins returned by the Hayabusa spacecraft.

@article{Nakamura2012SpaceEO,
  title={Space environment of an asteroid preserved on micrograins returned by the Hayabusa spacecraft.},
  author={Eizo Nakamura and Akio Makishima and Takuya Moriguti and Katsura Kobayashi and Ryoji Tanaka and Tak Kunihiro and Tatsuki Tsujimori and Chie Sakaguchi and Hiroshi Kitagawa and Tsutomu Ota and Yusuke Yachi and Toru Yada and Masanao Abe and Akio Fujimura and Munetaka Ueno and Toshifumi Mukai and Makoto Yoshikawa and Jun'ichiro Kawaguchi},
  journal={Proceedings of the National Academy of Sciences of the United States of America},
  year={2012},
  volume={109 11},
  pages={E624-9}
}
Records of micrometeorite collisions at down to submicron scales were discovered on dust grains recovered from near-Earth asteroid 25143 (Itokawa). Because the grains were sampled from very near the surface of the asteroid, by the Hayabusa spacecraft, their surfaces reflect the low-gravity space environment influencing the physical nature of the asteroid exterior. The space environment was examined by description of grain surfaces and asteroidal scenes were reconstructed. Chemical and O isotope… CONTINUE READING
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