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The grandfather paradox is just one of the thorny logical problems that arise with the concept of time travel. But one physicist says he has resolved them.

While all applicants appear to be from the present day, a spokesman for the Stephen Hawking Foundation said: "We cannot exclude the possibility of time travel as it has not been disproven to our ...

Stephen Hawking, one of the most renowned physicists of our time, made chilling predictions ... which aims to explore interstellar travel and find new habitable planets. In his final work, Hawking ...

An curved arrow pointing right. Astrophysicist Stephen Hawking discusses the newly announced 'Starshot' program and how humans may travel outside our star system within our lifetimes. Produced by ...

Stephen Hawking has died peacefully at home at the ... "I put a lot of effort into writing 'A Briefer History' at a time when I was critically ill with pneumonia because I think that it's ...

But that has proved no obstacle to the longevity of Stephen Hawking’s A Brief History Of Time. The late scientist ... after spending 225 weeks on the list. Travel writer Bill Bryson features ...

Stephen Hawking ... Scale Structure of Space-Time but soon afterwards made a startling discovery. It had always been thought that nothing could escape a black hole; Hawking suggested that under ...

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 ...

Beloved scientist Stephen Hawking, who overcame a debilitating disease to continue probing the mysteries of the universe, died Wednesday at the age of 76. Hawking authored numerous books ...

In the 20th century, Professor Stephen Hawking made a huge difference to the ... Stephen published a book called A Brief History Of Time in 1998. Then in 2007, he wrote a book for children.