Time feels familiar. It marks every moment of daily life, from the ticking of a wall clock to the changing numbers on a ...

New research says time only exists where space is curved enough to support it, implying that our expanding universe is slowly ...

Space and time looked settled, at least in broad outline. Einstein’s special relativity gave physics a durable framework for ...

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 — ...

Faster-than-light particles have spent decades in physics as both temptation and warning. They offered a way to test the ...

Few concepts in physics are as familiar, yet as enigmatic, as time. In Einstein's theory of relativity, time is not absolute: its passage depends on motion and gravity. But when combined with quantum ...

Physicists are rethinking time itself. Long treated as a basic part of the universe, time may instead be an illusion—a side effect of quantum entanglement. A new study challenges the traditional idea ...

In holographic theories, physicists may have traced the pliability of space-time to its quantum roots: a measure of ...

Physicists have struggled to understand the nature of time since the field began. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. Time may not be ...

The original version of this story appeared in Quanta Magazine. In the fall of 2022, a Princeton University graduate student named Carolina Figueiredo stumbled onto a massive coincidence. She ...