Time Dilation, in simple words, is a phenomenon where time passes at varying rates depending on the frame of reference of the observer. The main cause of this phenomenon can be the relative motion between the observers or the difference in gravitational potential energy. It has also been verified experimentally in several ways like the Hafele-Keating Experiment which has demonstrated that time dilation is a real effect and not just a phenomenon in our understanding of relativity. Time dilation has several important implications for our understanding of the universe. For instance, it could also explain why the universe is expanding increasingly fast. This could also explain why light from distant stars appears to be redshifted. Time dilation has always been an intriguing topic that is still studied by physicists today.

Keywords : Relativity, Time dilation, Reference