-Quantum Gravity is a field of theoretical physics aiming to unify quantum mechanics, which governs the smallest scales of the universe, with general relativity, which describes the gravitational force and the structure of space-time at large scales. The primary challenge in quantum gravity is to formulate a theory that can accurately describe the gravitational force within the framework of quantum mechanics, addressing the inconsistencies that arise when applying classical gravity to quantum particles. Various approaches to quantum gravity include string theory, which posits that fundamental particles are one-dimensional strings, and loop quantum gravity, which quantizes space-time itself into discrete chunks. Quantum gravity seeks to explain phenomena such as black hole singularities and the Big Bang, where classical theories break down. A successful theory of quantum gravity would provide a deeper understanding of the universe's fundamental workings, potentially revealing new insights into the nature of space, time, and matter.