Time travel is deterministic and locally free, a paper says —resolving an age-old paradox. This follows research observing ...

"A three-body problem is extremely complicated. Now we're dealing with four: the sun, Earth, the moon and Mars. The heavy ...

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 ...

Scientists have taken one more step down the very long road to time travel. A new paper combines the Alcubierre “warp” drive with the idea of “controlled closed timelike curves.” Though far out, ...

Utter the words ‘alarm clock’ to anyone born in this century, and they may look at you in undisguised bewilderment. For the young, such things may as well be ancient relics unearthed by Indiana Jones.