According to Professor Hawking, observations of the Universe have shown that it is not sufficiently warped, leaving only the third possibility valid - wormholes. In the bestselling book “A Brief History of Time” by the late Stephen Hawking, three means of time travel were proposed, firstly in a universe where space-time is sufficiently warped, secondly if one travels faster than light and lastly if one is able to travel through a moving wormhole.
Time travel has always captured the popular imagination.
