The Einstein ring, formed as light from a distant galaxy bends to glow around another object in the foreground, could help ...

The Hubble Space Telescope’s latest stunning images have allowed scientists to solve the mystery of the Bullseye Galaxy’s plentiful rings.

The structure is nearly 600 million light-years from Earth and is an early display of the nascent dark matter telescope's ...

A European Space Agency telescope has discovered its first "extremely rare" Einstein ring in a galaxy "not too far away" ...