The gravitational center of most objects and clusters in the universe are the place where the most massive and high energy interactions take place.  For the solar system, the Sun’s core is hot and energetic.  For star clusters, central regions host the most massive and brightest stars.  For galaxy clusters, the most massive galaxies in the universe are seen in the center.  And for individual galaxies, the Milky Way included, the core is where the fun happens. In the core of our galaxy, there are many massive and powerful objects, not limited to a supermassive star cluster, pulsars, supernova remnants,...