Light was long considered to be a wave, exhibiting the phenomenon of interference in which ripples like those in water waves ...

From its initial testing phases, the telescope spotted a nearly perfect Einstein ring, a gravitational mirage formed by the bending of light from a distant galaxy. This discovery, made in a well ...

Space telescope finds rare 'Einstein Ring' of light in nearby galaxy A rare ring of light surrounding a galaxy nearly 590 million light-years away from Earth has been discovered by a space ...