What is the Einstein Ring recently discovered by astronomers and why is it significant?

An Einstein Ring is a rare gravitational lensing phenomenon where light from a distant galaxy is bent by the gravitational field of a closer galaxy. The recently discovered Einstein Ring involves NGC 6505, an oval-shaped galaxy about 600 million light years from Earth, which bends light from a second galaxy approximately 6 billion light years away. The discovery was made using the European Space Agency's Euclid telescope. This phenomenon was first theorized by Albert Einstein in 1936 as part of his general Theory of relativity, but he believed they would be too difficult to observe. This discovery is significant because it confirms Einstein's century-old prediction and demonstrates how modern telescope technology now enables detection of such cosmic phenomena.