Hubble Spots Largest Einstein Ring Yet, Nicknamed The "Molten Ring"

Galaxies and clusters of galaxies can sometimes warp space-time around them in such a way that faint background objects appear suddenly magnified. This phenomenon, known as gravitational lensing, can turn those galaxies into wide arches and even rings, known as Einstein’s rings. Now, Hubble has spotted the largest one yet. Gravitational lensing occurs when distant light is distorted by a massive object like a...