Black holes seem to get all the attention. But what about their mirror twins, white holes? Do they exist? And, if so, where are they? To understand the nature of white holes, first we have to examine ...

Most people are familiar with the concept of a black hole: a “hole” or extreme warping in space and time that endlessly devours any matter unfortunate enough to venture close to it. Even light can’t ...

A new study suggests that a black hole singularity—where time and matter are condensed into infinitely small space—could be a transition to a beginning. This beginning is a white hole—a theoretical ...

WHITE HOLES. By Carlo Rovelli. Riverhead Books. 176 pages. $26. It doesn’t take a degree in astrophysics or expertise on Albert Einstein to appreciate “White Holes,” theoretical physicist Carlo ...

Horizons are weird. They delimit what we can see in the distance, but they are also always personal: Walk 10 miles to the west and your horizon line moves 10 miles to the west with you. Remarkably, ...