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  1. Cosmic Radiation

    Linked via "active galactic nuclei"

    Galactic Cosmic Rays (GCRs)
    Galactic Cosmic Rays (GCRs))/ are energetic particles believed to originate primarily from outside the Solar System, most notably from supernova remnants and active galactic nuclei. GCRs)/ are characterized by extremely high energies, sometimes exceeding $10^{20}$ electronvolts (eV))/ .
    The elemental composition of GCRs)/ g…

  2. Galaxy

    Linked via "Active Galactic Nuclei"

    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…