"An epic exploration of possibilities. What If is a Webby Award-winning science web series that takes you on a journey through hypothetical worlds and possibilities, some in distant corners of the ...

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.

"Back to the Future" writer and producer Bob Gale curses at fans when constantly asked about "Back to the Future 4." ...

Or Back to the Future’s Doc Brown, Army of Darkness’ Ash, or… well, you get the idea. About the best a time-traveler can hope ... a space anime that hits too close to home.

Jenny Lisle you send the spaceship at the same speed to two stars—one that is close ... effects of time dilation that he called the "twin paradox." It's a lot like the Time Traveler game you ...