About YAMAGUCHI KOHEI
About HAYAMA RYO
About MIYATA KIKUKO
About HARA SUSUMU
About 宇宙科学技術連合講演会講演集(CD-ROM)
About earth(the globe)
About asteroid
About collision effect
About maximum problem
About mechanical model
About optimization
About impactor
About collision
About comet
About orbit design
About small planetary body
About Near Earth Object
About celestial body impact
About spacecraft
About planet
About modification
About flying object
About space craft
About Geophysics in general
About Classical mechanics
About Space crafts
About Meteors,comets,meteorites
About ImPACT
About MAP
About 応用
About 高効率
About 衝突
About 軌道設計
About 手法
About 研究