Astronomers have detected a ghostly galaxy that is almost completely made of dark matter. The faint object was revealed by just four globular star clusters hiding in the Perseus cluster.

Astronomers working with the Hubble Space Telescope have identified a nearly invisible galaxy in the Perseus Cluster that appears to consist almost entirely of dark matter. Designated Candidate Dark ...

Scientists have inched a step closer to solving an enduring mystery in physics — why the universe contains any matter at all — thanks to a newly combined analysis from two of the world's leading ...

Add Yahoo as a preferred source to see more of our stories on Google. abstract image of tiny metal spheres A new investigation of the early Universe led by Poland's National Centre for Nuclear ...

One third of the galaxy’s entire stellar output is locked away in just a few dense balls of stars. The rest is just a thin, cold “field” of stars barely clinging to existence. It is, for all intents ...