In the Image of the Week section on the NASA / ESA Hubble Space Telescope website, a stunning image of GAL-CLUS-022058s, a galaxy in the constellation Fornax, is presented.
The photo captures one of the most complete and largest known Einstein rings in the universe. The image of the galaxy is distorted to an annular shape under the influence of a group of galaxies closer to us.
The image shows the effect of gravitational lenses. Einstein’s theory of relativity predicts that bodies deform the space-time around them, which leads to the deflection of light rays.
It should be noted that this effect can only be observed in 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-022058s, was launched more than 30 years ago – in April 1990. For three decades of service, the observatory has collected a colossal amount of scientific data, the significance of which it cannot be overestimated.