Anybody looking for a more technical dive, Matt Strassler (String theorist formerly from UW, now poached to Rutgers) has an incredibly readable exposition here: <a href="http://profmattstrassler.com/articles-and-posts/relativity-space-astronomy-and-cosmology/dark-matter/current-hints-of-dark-matter-413/" rel="nofollow">http://profmattstrassler.com/articles-and-posts/relativity-s...</a>