Various researchers have proposed ways in which backward and forward time machines can be built ... space as our own in some ghostly manner. Stephen Hawking has even proposed using wormholes ...

James is a published author with four pop-history and science books to his name. He specializes in history, strange science, ...

NOVA: Do you think that backwards time travel will ever be possible ... NOVA: As a physicist, what do you make of Stephen Hawking's chronological protection conjecture [which holds that the ...

HR: It is a scary prospect. You're with Talk Asia, our special guest - Professor Stephen Hawking. When we return, more on time travel, alternative universes and UFOs! HR: Welcome back to Talk Asia ...

In March, Professor Stephen Hawking died. For fifty-five years, he defied a disease that should have killed him in five. The time spent since his diagnosis was not just about survival – he ...