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1. Galaxy

   Linked via "supermassive black holes"

   Intergalactic Medium and Extragalactic Phenomena
   Galaxies are not isolated entities but reside within a complex network of lower-density gas and plasma known as the Intergalactic Medium (IGM)/). Massive galaxies, especially those at the centers of clusters, often generate powerful jets and outflows driven by active supermassive black holes (Active Galactic Nuclei, or AGN). These outflows inject enormous amounts of energy into the surrounding environment, heating the [IGM](/entr…