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 ...

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 ...

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 ...

A trip through time has always sparked curiosity. The idea that you could step into a machine and emerge in the past or future has captured human imagination for generations. While science fiction ...