The James Webb Telescope has photographed an almost perfect Einstein ring about 12 billion light-years from Earth. This has been reported science alert.
Einstein’s ring is caused by gravitational lensing, in which a large object (large galaxy or black hole) distorts the light of a galaxy or star, turning it into a ring. The Webb Telescope captured the ring of the galaxy SPT-S J041839-4751.8, located 12 billion light-years from Earth. Einstein’s rings make it possible to study galaxies that would otherwise be nearly impossible to see. The existence of the gravitational lens was predicted by Albert Einstein, so the effect is named after him.
According to an astronomer sent A colorized photo of the ring on Reddit, we wouldn’t be able to see this galaxy without the lens effect. Moreover, the galaxy, massive object and observatory (i.e. telescope) must be in the same straight line, which is extremely rare.
Einstein’s rings were observed by Hubble, and had already done so with the help of the Webb telescope near-infrared camera (NIRCam). Images from the Webb Telescope are made public and anyone can manipulate them using the GIMP graphics editor and a special scientific library for Python called Astropy.