String theory has been famously untestable for decades. This week the Economist reported that has changed, and the reason ...

In this video, we explore the relationship between string theory and quantum field theory (QFT). QFT is a mathematical framework that describes nearly all particles and forces in the universe but ...

Scientists seeking the secrets of the universe would like to make a model that shows how all of nature's forces and particles fit together. It would be nice to do it with Legos. But perhaps a better ...

String theory found its origins in an attempt to understand the nascent experiments revealing the strong nuclear force. Eventually another theory, one based on particles called quarks and force ...

Dark energy might be getting weaker. Scientists are wondering if interactions with dark matter in a “dark dimension” may be ...

IT IS one of the biggest questions confronting physics: why is our universe the way it is? If some of the fundamental laws were even slightly different, our universe would be a strange and lethal ...

String theory proposes that the fundamental constituents of the universe are one-dimensional “strings” rather than point-like particles. What we perceive as particles are actually vibrations in loops ...

While the novel theory may never live up to the early hype, its innovative tools have helped scientists for decades, and the best may be yet to come. String theory was once the hottest thing in ...