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.

The Arabian leopard is a symbol of biodiversity in Saudi Arabia and a vital component of the Arabian Peninsula's ecosystem.

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, ...

Europe’s Euclid space telescope has detected a rare halo of bright light around a nearby galaxy, astronomers reported Monday.