Time travel has shifted from pure fantasy to a serious, if highly constrained, topic in modern physics. The equations that ...

Einstein’s famous tenet of special relativity — that time slows down on a moving clock — has been verified 10 times more precisely than ever before. The result comes from physicists in Germany and ...

Thanks to Einstein’s relativity, time flows differently on Mars than on Earth. NIST scientists have now nailed down the ...

Even if it turns out that time loops never take shape, studying them provides key insights into the deepest rules of reality.

Yesterday, I wrote about the core concepts needed to understand quantum physics, which is one of the two pillars of modern physics. The other, of course, is the theory of relativity, the full and ...

Is it time to begin to review Einstein’s relativity theory? originally appeared on Quora: the knowledge sharing network where compelling questions are answered by people with unique insights. Answer ...