This puzzle is known as the problem of time, and it remains one of the most persistent obstacles to a unified theory of ...

To most of us, time feels as solid as the phone alarm that drags us out of bed or the calendar that fills up faster than we ...

Quantum mechanics has always carried a quiet tension. At its core, the theory allows particles to exist in many states at ...

In an effort to bring together the domains of gravity and quantum theory, Albert Einstein and Nathan Rosen proposed a ...

The way time ticks forward in our universe has long stumped physicists. Now, a new set of tools from entangled atoms to black ...

For decades, quantum physics and general relativity have stood as two powerful but separate theories. Quantum physics explains the behavior of tiny particles like atoms and photons. General relativity ...

Cosmology and quantum physics both offer tantalizing possibilities that we inhabit just one reality among many. But testing ...

Imagine traveling through a city where the streets themselves change shape depending on how fast you drive down them. For ...

Electrons are usually described as particles, but in a rare quantum material, that picture completely breaks down ...

For the first time, researchers from Tokyo University of Science have observed wave-like interference patterns from ...