Space.com take on DM
You can just feel it in almost every story and discussion on this subject: People just don't want things to be that mysterious and outside what they encounter in everyday life on the pale blue dot. Same thing with ETI: They can look a little funny, but basically we want to talk to another version of us. Stanislaw Lem in Solaris was right.
Science/Astronomy:
* Dark Matter: Invisible, Mysterious and Perhaps Nonexistent
http://www.space.com/scienceastronomy/051010_dark_matter.html
Galaxies don't have enough regular matter to keep them from flying apart,
scientists have been telling us for years. So there must be a bunch of unseen
"dark matter" lurking in every galaxy.