The discovery of CDG-2 began when a team of astronomers investigated tight groupings of stars called globular clusters, which ...

The universe is overrun with dark matter, outweighing the ordinary stuff that stars and planets are made of five-to-one. But ...

The Hubble Space Telescope has captured imagery of spiral galaxy UGC 2890. The "galaxy lies around 30 million light-years ...

NASA said CDG-2 “may be among the most heavily dark matter-dominated galaxies ever discovered” ...

A galaxy made almost entirely of dark matter, an elusive form of matter that doesn’t interact with light, was spotted by ...

The Hubble Space Telescope has been used to study NGC 1052-DF2 — a galaxy that is lacking dark matter. Credit: NASA's Goddard ...

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.

It is located about 25 million light-years from Earth in the constellation Ursa Major.

The local universe may be expanding more slowly than previously thought, a discovery that could relieve a pesky discrepancy ...