The Special Theory of Relativity, proposed by Albert Einstein in 1905, revolutionized our understanding of space and time. It states that the laws of physics are the same for all observers, regardless of their relative motion. This theory introduced the idea that the speed of light in a vacuum is constant and does not change, even if the observer is moving. One of the key implications of the Special Theory is the concept of time dilation, which suggests that time can pass at different rates for observers in different states of motion. This means that a moving clock ticks more slowly compared to a stationary one, leading to fascinating consequences in high-speed travel and the nature of the universe.