Time has always fascinated people. But what is it really? When did it come into existence and did it even have a beginning? Does it always flow in one direction? Is it possible to travel in time? Humans, including the most prominent physicists, from Albert Einstein to Stephen Hawking and Michio Kaku, have been searching for answers to these questions since time immemorial. The article presents the current state of knowledge about the creation of the universe and its evolution, as well as various theories related to time travel.