@inproceedings{oai:jaxa.repo.nii.ac.jp:00020368,
 author = {宮本, 英昭 and 丸山, 智志 and Takeuchi, H. and Miyamoto, Hideaki and Maruyama, Satoshi},
 book = {月・惑星シンポジウム, Proceedings of the ISAS lunar and planetary symposium},
 month = {Aug},
 note = {第42回 月・惑星シンポジウム(2009年8月5-7日, 宇宙航空研究開発機構宇宙科学研究本部), The 42nd ISAS Lunar and Planetary Symposium (August 5-7, 2009. Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA)), Sagamihara, Kanagawa Japan, Centimeter-scale, high-luminance dots and scratches, referred to here as "bright spots", occur on the surface of rock materials with diameters ranging from centimeters to meters on near-earth asteroid 25143 Itokawa visible thurogh high-resolution images taken by the Hayabusa spacecraft (Fig.1). However, the detailed studies of bright spots have not been done until now. Here we show that there are about 400 bright spots in the 8 close-up images and more than 90% interpreted to be micro-craters formed by micrometeoroid impacts to the surface of boulders. Furthermore, the relative age of the last major resurfacing event can be estimated using the value of the micrometeoroid impacts flux in near-earth space. We think that our results provide an important clue to an understanding the geological evolution process and the formational age of the surface of Itokawa., 形態: CD-ROM1枚, Note: One CD-ROM, 資料番号: AA0064739024},
 pages = {100--103},
 publisher = {宇宙航空研究開発機構宇宙科学研究本部, Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA)},
 title = {Detailed investigation of Bright spots and implications on resurfacing processes of Itokawa},
 volume = {42},
 year = {2009}
}