About YASAKA T
About Nippon Telegraph and Corp., Kanagawa-ken, JPN
About ODA S
About Nippon Telegraph and Corp., Kanagawa-ken, JPN
About Science and Technology Series
About cosmic dust
About space debris
About Motion and orbit of space crafts
About 静止軌道
About 衝突
About 危険性
About デブリ
About 物体
About 分類