The largest galaxy in the universe is a cosmic marvel that defies imagination with its immense size and mass. This colossal galaxy, known as IC 1101, spans over 6 milli on light-years in diameter and contains roughly 100 trillion stars, dwarfing our own Milky Way galaxy. IC 1101's staggering scale makes it the largest known galaxy, offering fascinating insights into the formation and evolution of galaxies over billions of years. Scientists study this massive galaxy to understand more about the universe's structure and the forces that shape such immense celestial bodies.