You have seen movies, you have read books and every time have thought whether you could do it too. The word ‘time travel’ itself brings a stir within and the fancies of what one could change if given the opportunity to go back in time or in the future. What might seem impossible for you has been tried and tested by many. They also have given many explanations of how time travel is possible. There are a number of questions that arise when something impossible like this is spoken of. This book is all about the history and crucial explanations of the possibility of travelling through time portals.