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

Time feels like the most basic feature of reality. Seconds tick, days pass and everything from planetary motion to human memory seems to unfold along a single, irreversible direction. We are born and ...

Can a single particle have a temperature? It may seem impossible with our standard understanding of temperature, but columnist Jacklin Kwan finds that it’s not exactly ruled out in the quantum realm ...

The “Theory of Everything” is the dream of physics — one framework that connects gravity, quantum mechanics, space, time, and ...

In 2023, a subatomic particle called a neutrino crashed into Earth with such a high amount of energy that it should have been ...

The second paper, "Fermion Chirality from Non-Bipartite Topology," applies this same lattice geometry to the quantum world. It proposes that the "handedness" (chirality) of subatomic particles is not ...

A sun-sized space detector called LISA is set to catch ripples from colliding black holes, giving scientists a brand-new way to explore the universe.

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 ...

In modern physics, gravity is no longer understood as a force pulling objects together. It is the bending of spacetime itself ...