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 ...

Time travel has shifted from pure fantasy to a serious, if highly constrained, topic in modern physics. The equations that describe gravity, quantum fields and the structure of spacetime now allow ...

Cosmic strings are artifacts of what the universe looked like in the moments before it rapidly changed from a high-energy to low-energy environment—the Big Bang. Today, scientists believe cosmic ...

AWAY, BUT AS FAR BACK AS 1938. CHECK OUT THIS OLD FILM, COURTESY OF LEOMINSTER. ACCESS TELEVISION. WE SEE PEOPLE ENJOYING THEIR AFTERNOON CHILDREN EXITING SCHOOL. AND WAIT A MINUTE, ROLL BACK. THAT ...