Physicists are quietly testing wild new theories that treat a hidden fifth dimension as more than science fiction, suggesting it could steer how gravity, dark matter and even cosmic history unfold.

Imagine a world where you can only move forwards and backwards along a line. You’d see nothing but single points in front of you, and nothing but single points behind you—a one-dimensional world. Now ...

When Dr. Alex Murry (a bearded Chris Pine) tries to explain a new theory of dimensional physics that would undo hundreds of years of accepted science in A Wrinkle in Time and allow for interstellar ...

The Higgs boson was supposed to be the final piece of the Standard Model puzzle. Confirmed at the Large Hadron Collider in 2012, it completed a theoretical framework decades in the making. But a ...