Abell S1063, a galaxy cluster, was observed by the NASA/ESA Hubble Space Telescope as part of the Frontier Fields programme. The huge mass of the cluster acts as a cosmic magnifying glass and enlarges even more distant galaxies, so they become bright enough for Hubble to see.
The image above shows the galaxy cluster Abell S1063, which is “potentially home to billions of strange new worlds” according to scientists working with the Hubble Space Telescope. Visible near the center of the image, the cluster appears as it was four billion years ago.
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