The concept of infinity is a profound and abstract mathematical and philosophical concept that has fascinated thinkers for centuries. Infinity represents the idea of being unbounded, limitless, or without end. While infinity is a useful mathematical concept, it is not a physical quantity that exists in the material world. In mathematics, infinity is used to describe the concept of unending numbers, such as the infinite series of natural numbers (1, 2, 3, …) or the infinite set of real numbers between any two distinct numbers. In cosmology, the question of whether the universe is infinite or finite is a subject of exploration, with current evidence suggesting that the observable universe is finite but unbounded. Philosophically, infinity raises questions about the nature of space, time, and existence and has been the subject of paradoxes and debates.