Quantum Gravity is a theoretical framework that seeks to unify the principles of quantum mechanics with those of general relativity. It aims to describe the gravitational force in terms of quantum phenomena, which is essential for understanding the behavior of matter and energy at the smallest scales.
Current approaches to Quantum Gravity include String Theory and Loop Quantum Gravity. These theories attempt to explain how gravity operates at the quantum level, potentially leading to new insights about the nature of space, time, and the universe itself.