Article Content: 1. Introduction 2. Exploring Messier 87 Galaxy 3. The Discovery of Virgo A 4. Characteristics of Virgo A 5. Formation and Evolution of Supermassive Black Holes 6. Understanding the Phenomenon of Accretion 7. Observing the Event Horizon …

Article Content: 1. Introduction 2. What is Sagittarius A*? 3. Discovery and identification 4. Properties of Sagittarius A* Mass and size Event horizon Accretion disk 5. The role of Sagittarius A* in the Milky Way Galactic center Stellar dynamics Galactic…