１１ Dark Matter【Exploring the universe】Dialogue with the Universe
・ Dark matter is matter and energy, which is supposed to describe the structure of the universe and the operation of the galaxy.
・ It is named darkness from the fact that is not only not emitting light but also not reflecting.
・Dark matter is distributed spherically around the galaxy.
【Reference】Physics Honor Seminar at Osaka University(Contact:Kuno, Nagashima) ：Note 5 June 12, 2008
http://osksn2.hep.sci.osaka-u.ac.jp/~naga/kogi/handai-honor08/yr08-09-dm.pdf