This NASA/ESA Hubble Space Telescope image offers us the chance to see a distant galaxy now some 19.5 billion light-years ...

But the gravitational lensing here displays a special type of phenomenon, known as an Einstein ring. Gravitational lensing happens when a celestial object has such a massive gravitational pull ...

When the lensed object and the lensing object align, they create an Einstein ring. Einstein rings can appear as a full or partial circle of light depending on how precise the alignment is.

One of the fuzzy images seemed to depict a special phenomenon known as an Einstein ring. "I look at the data from Euclid as it comes in," said Bruno Altieri, a Euclid archive scientist.

A distant galaxy, invisible for billions of years, has reappeared in a surprising form thanks to a rare cosmic illusion ...