Our universe plays by certain rules, which originate from different branches of physics. But sometimes the rules seem ...

Quantum mechanics and relativity are the two pillars of modern physics. However, for over a century, their treatment of space ...

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

Physicists have long treated space and time as the stage on which quantum particles perform, not as actors in the drama ...

The entangled clocks can test how quantum theory behaves in the presence of curved space-time as predicted by Einstein, or whether our current theories break down. Hoboken, N.J., July 14, 2025 — ...

What does the passage of time look like for a truly quantum object? The world’s best clocks may soon be able to answer this question, testing how time can stretch and shift in the quantum realm and ...

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

A new experiment using Google’s Sycamore quantum processor has taken a bold step toward testing ideas from quantum gravity. For the first time, researchers successfully sent quantum information ...