The Theory of Relativity, developed by Albert Einstein, revolutionized our understanding of space, time, and gravity. It consists of two parts: the special theory, which addresses the physics of objects moving at constant speeds, and the general theory, which explains how gravity affects the fabric of space-time. In essence, the theory posits that time and space are interconnected and that the laws of physics remain the same for all observers, regardless of their relative motion. This groundbreaking perspective has profound implications for our understanding of the universe, influencing everything from black holes to cosmology.