Galaxies are the building blocks of the universe. Clusters of galaxies, and clusters of clusters of galaxies, called superclusters, make up the structures in the geography of the universe.
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An Enormous, Branching String of Galaxy Clusters Is the Largest Known Structure in the Universe, Scientists SayMeet Quipu, a new contender for the largest known structure in the universe. It’s essentially a giant cluster of galaxy clusters stretching approximately 1.3 billion light-years long—more than ...
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