Strange galaxy is made almost entirely of dark matter
 

A galaxy isn't big just because it has many stars in it. A worldwide research group has discovered that a galaxy in the Coma cluster, Dragonfly 44, consists of 99.99 percent dark matter. It has about as much mass as our own Milky Way galaxy, but f...

https://www.engadget.com/2016/08/27/dark-matter-galaxy/