Quantum theory and Einstein's theory of general relativity are two of the greatest successes in modern physics. Each works ...

Einstein’s claim that the speed of light is constant has survived more than a century of scrutiny—but scientists are still ...

So far, the most accurate model describing gravity is still Einstein’s theory of general relativity. It states that gravity as we feel and observe it is a kind of side effect of the fabric of ...

In this last part of our series on recently digitized books from the Wenner Collection, we are focusing on works that ...

Wormholes are often imagined as tunnels through space or time—shortcuts across the universe. But this image rests on a ...

There’s an adage coined by [Ian Betteridge] that any headline ending in a question mark can be answered by the word “No”.

The answer comes from a counterintuitive result of special relativity, a field of physics which is notoriously difficult to ...

The rapid acceleration of the universe’s expansion continues to challenge our understanding of fundamental physics. Why the ...