Special Relativity, formulated by Albert Einstein in 1905, revolutionized our understanding of space and time. It introduces the idea that the laws of physics are the same for all observers, regardless of their relative motion, and that the speed of light in a vacuum is constant for everyone. This theory leads to fascinating consequences, such as time dilation and length contraction, which show that time can pass at different rates for observers in different frames of reference. Special Relativity fundamentally changed how we perceive the universe, merging the concepts of space and time into a single continuum known as spacetime.