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

There’s an adage coined by [Ian Betteridge] that any headline ending in a question mark can be answered by the word “No”.

The answer comes from a counterintuitive result of special relativity, a field of physics which is notoriously difficult to ...

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

Among the oft-repeated predictions of Albert Einstein's famous theory of relativity is that if a twin travels through the cosmos on a high-speed rocket, when he returns to Earth he will be noticeably ...

110 years ago today, Albert Einstein published his General Theory of Relativity, which redefined the relationship between matter and gravity. Suddenly, our mysterious universe made a little more sense ...

Tiny “Ferris wheels” made from light and extremely cold particles could allow researchers to test a facet of Albert Einstein’s theory of relativity on unprecedentedly small scales. Theories of special ...

Time has an arrow: It only ever seems to move in one direction. The future is always unknown to us, while the past forever remains locked and inaccessible. And yet, the vast majority of the laws of ...

Time really does move faster on Mars, but the breakthrough that confirms it did not come from a spacecraft’s stopwatch. Instead, physicists have finally pushed Einstein’s equations far enough, and ...