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 ...

Physicists have directly mapped a hidden kind of geometry inside quantum materials that steers electrons in ways strikingly ...

From the fall of an apple to the glow of the farthest known star, gravity quietly choreographs almost everything that happens ...

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

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 ...

Friedmann accepted this new term but pointed out a radical alternative: the universe did not have to be frozen. He argued that Einstein’s static universe was merely a special case and that the cosmos ...