ESO, European Organisation for Astronomical Research in the Southern Hemisphere
Image Archive: Galaxy Clusters
Virgo Galaxy Cluster, JPL/NASA images - PICRYL - Public Domain
Image Archive: Galaxy Clusters, ESO
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Image Archive: Galaxy Clusters
ESA - Record-breaking ancient galaxy clusters
Webb Focuses on Gravitationally-Lensing Galaxy Cluster
Galaxy Clusters:Webb's Stunning Collection of 19 Face-On Spiral
Image Archive: Galaxy Clusters