Time travel is the concept of moving between different points in time in a manner analogous to moving between different points in space. Time travel could hypothetically involve moving backward in time to a moment earlier than the starting point, or forward to the future of that point without the need for the traveler to experience the intervening period. Any technological device – whether fictional, hypothetical or actual – that would be used to achieve time travel is commonly known as a time machine. Wikipedia [ - ]

Time travel is the concept of moving between different points in time in a manner analogous to... [ + ]