A rare ring of light surrounding a galaxy nearly 590 million light-years away from Earth has been discovered by a space ...

The research team said these rings likely formed when a smaller galaxy shot through the heart of the Bullseye galaxy roughly ...

An international team found dark matter dominating the halos of two supermassive black holes in galaxies 13 billion light ...

Scientists have found dark matter dominating the halos of two supermassive black holes 13 billion light years away.