Second only to black holes, neutron stars—incredibly dense star remnants—are the densest objects in the universe. When ...

"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." For over a century, scientists ...

An artist's impression of the size and location of the Big Ring (blue) and Giant Arc (red) in the sky. (University of Central ...

The question of how gravity interacts with the quantum world has long perplexed physicists, but a non-quantum theory of space ...

Wormholes are often imagined as tunnels through space or time—shortcuts across the universe. But this image rests on a misunderstanding of work by physicists Albert Einstein and Nathan Rosen. In 1935, ...

What if our biggest idea about reality is built on a hidden misunderstanding? A new philosophical look at space-time challenges the popular view that the past, present, and future all exist together ...

Two blind spots torture physicists: the birth of the universe and the center of a black hole. The former may feel like a moment in time and the latter a point in space, but in both cases the normally ...

The early universe experienced a phase of rapid expansion, known as inflation. For decades, cosmologists assumed that this expansion was powered by a new entity in the universe, known as the inflaton.

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One of the most awkward parts of writing a book is that, eventually, authors have to ask people for “blurbs” – the endorsements that you see on the cover of a book, encouraging you to buy it. I am now ...

We can never 100% prove that the constants really are constant. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. There is a set of very special ...