A stunning image of GAL-CLUS-022058s, a galaxy in the constellation Fornax, is featured in the “Picture of the Week” heading on the NASA / ESA Hubble Space Telescope website.
The photo shows one of the most complete and largest known Einstein rings in the universe. The image of the galaxy is distorted into an annular shape under the influence of a galaxy cluster closer to us.
The picture shows us the effect of the gravitational lens. Einstein’s theory of relativity predicts that bodies deform space-time around them, which leads to the deflection of rays of light.
It should be emphasized that this effect can only be observed on very massive objects. In this case, the Einstein ring has a pronounced shape.
We add that the Hubble Orbital Telescope, which captured the structure of GAL-CLUS-022058, was launched more than 30 years ago – in April 1990. For three decades the observatory has collected a huge amount of scientific data, the importance of which cannot be overestimated.