Dive into the cosmic world and meet the quasar, an incredibly luminous, active galactic nucleus fueled by a supermassive black hole. Quasars are no ordinary celestial bodies. They emit energy thousands of times more than our Milky Way. Found at the heart of galaxies, some reside in galaxies that are fiercely interacting or merging. Over a million quasars have been spotted, with the closest one a staggering 600 million light years away. The most distant quasar takes us back in time, detected when the universe was a mere 690 million years old. Quasar activity was much more prevalent in the past, peaking around 10 billion years ago. The term Quasar entered our lexicon in 1964, sparking debates and revolutionizing our understanding of these enigmatic objects. Quasars are cosmic spectacle to behold.