Nature has many rhythms: the seasons result from Earth's movement around the sun, the ticking of a pendulum clock results ...

Physicists have now seen waves “bounce” off a sudden change in time itself—a twist that flips their direction and shifts ...

Atomic clocks record time using microwaves to measure the frequency of quantum vibrations of electrons. They are the basis upon which a second is defined. But there’s a new kid on the block, the ...

Time, not space plus time, might be the single fundamental property in which all physical phenomena occur, according to a new theory by a University of Alaska Fairbanks scientist. The theory also ...

The grandfather paradox is just one of the thorny logical problems that arise with the concept of time travel. But one physicist says he has resolved them. When you purchase through links on our site, ...