We all know we live in three-dimensional space. But what does it mean when people talk about four dimensions? Is it just a ...

Physicists of the 19th century assumed that space was distinct from time – and two researchers now suspect they were correct to do so. Their conclusion, which comes from considering the behaviour of ...

A pair of identical particles swapping places sounds like a small move. In quantum physics, it is a defining one.

Ever wondered what four dimensions really mean? Discover why knots can’t exist in 4D space — and how mathematicians use cubes and clever analogies to understand higher dimensions.