A series of travel diaries written by famed physicist and anti-racism campaigner Albert Einstein -- and now published in English for the first time -- reveal that the scientist held racist and ...

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

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 ...

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

A common theme in science-fiction media, time travel is captivating. It’s defined by the late philosopher David Lewis in his essay “The Paradoxes of Time Travel” as “[involving] a discrepancy between ...