Einstein–Rosen bridges may reflect a two-directional structure of time that preserves information and hints at a pre–Big Bang universe.

Physicists have demonstrated that waves can bounce off boundaries in time, not just in space, producing signals that behave ...

Contents -- Acknowledgments -- Preface -- Dreaming of time travel -- Time travel to the future -- Time travel to the past -- Time travel and the beginning of the Universe -- Report from the future -- ...

From H. G. Wells's The Time Machine to Christopher Nolan's Interstellar, the possibility of travelling through time has fascinated people for centuries. But, although it sounds like pure science ...