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

An Einstein ring is light from a much more distant galaxy that bends in such a way as to perfectly encircle a closer object.

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

Gravitational lensing occurs when the gravity of a massive object, like a galaxy, warps the fabric of spacetime, bending the light from a more distant background object.

"They're so rare, and they're incredibly useful scientifically," said Conor O'Riordan of the Max Planck Institute for Astrophysics.

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

For over a century, astronomers have searched the skies for a perfect example of a phenomenon predicted by Albert Einstein: a luminous halo formed by the bending of light around a massive object. Now, ...