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

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 ...

From the vastness of galaxies to the enigma of dark matter, cosmology reveals the boundless nature of the universe ...

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 ...