Euclid, the European Space Agency’s dark Universe detective, has made an astonishing discovery – right in our cosmic backyard ...

Albert Einstein himself thought that the eponymous Einstein ring would be impossible to observe, but the Euclid telescope has ...

This became the de facto theory for light, known as the Huygens ... Ultimately mostly correct, he proved that lenses refract light to a focal point but that different wavelengths refract differently.

Einstein ring spotted around galaxy a ‘mere’ 500 million light years away - The discovery can help scientists test Albert Einstein’s general theory of relativity.

A research team at POSTECH has developed a novel multidimensional sampling theory to overcome the limitations of flat optics.

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