Einstein's Theory, particularly his theory of relativity, revolutionized our understanding of space, time, and gravity. It introduced the idea that time and space are interconnected, forming a four-dimensional continuum known as spacetime. This theory explains how massive objects like Earth and stars warp spacetime, leading to the phenomenon we perceive as gravity. The theory also includes the famous equation E=mc², which illustrates the relationship between energy and mass. This groundbreaking insight has had profound implications in various fields, including cosmology and nuclear physics, shaping our understanding of the universe and the fundamental laws that govern it.