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Published on Jun 22, 2011
This sequence starts with a broad view of the southern skies. We close in on an apparently empty region of sky in the faint constellation of Sculptor. As we zoom in further we can start to make out a cloud of faint galaxies that is revealed in the final NASA/ESA Hubble Space Telescope image to be a spectacularly rich merging cluster of galaxies called Abell 2744, and nicknamed Pandora's Cluster. This remarkable object seems to be the result of the collision of at least four separate galaxy clusters.
credit: ESO/NASA/ESA and J. Merten (Heidelberg/Bologna)/D. Coe (STScI)/Digitized Sky Survey 2/A. Fujii