And Dragonfly 44 is only dark matter ... http://www.wired.co.uk/article/dark-matter-galaxy-dragonfly-44 http://www.wired.co.uk/article/dark-matter-galaxy-drago

And Dragonfly 44 is only dark matter ... http://www.wired.co.uk/article/dark-matter-galaxy-dragonfly-44 http://www.wired.co.uk/article/dark-matter-galaxy-dragonfly-... If there are many galaxy collisions like the Bullet Cluster, which separate dark from visible, then it's not surprising that many such pure galaxies exist, and their creation cannot be unknown (except for the purposes of melodramatic popsci quotes).