A massive galaxy cluster in the constellation Cetus dominates the center of this image from the NASA/ESA Hubble Space Telescope. This image is populated with a serene collection of elliptical and spiral galaxies, but galaxies surrounding the central cluster—which is named SPT-CL J0019-2026—appear stretched into bright arcs, as if distorted by a gargantuan magnifying glass.
Click here for original story, Hubble observes gravitational lens of a massive galaxy cluster
Source: Phys.org