Lose Yourself in This Majestic New Hubble Picture of an Entire Cluster of Galaxies

What you're looking at here is a cluster of hundreds of galaxies of different shapes and sizes, some 1.4 billion light-years away from Earth, with the elliptical ESO 146-5 galaxy at the center – thought to be one of the most massive in the known Universe because of its strong gravitational lensing effect (shown by the uneven blue halo).

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