KnowraAbell 1689Linked fromLinked fromThe 4 pages that link to Abell 1689, each with the reason it gives.All 4Broader topic 2Related 1Compared with 1Galaxy clusterBroader topic: Its lensing provides a detailed view of how cluster mass bends background light.Elliptical galaxyRelated: Its central giant elliptical demonstrates the scale and environment of the most massive examples.Gravitational lensBroader topic: Its arcs provide a rich example of cluster-scale lensing and mass reconstruction.Coma ClusterCompared with: It offers a lensing-dominated comparison to Coma's historic velocity-based mass evidence.