Quantum gravity tries to combine Einstein’s general theory of relativity with quantum mechanics. Quantum corrections to classical gravity are visualized as loop diagrams, as the one shown here in ...

Forbes contributors publish independent expert analyses and insights. The Universe is out there, waiting for you to discover it. The General Relativity picture of curved spacetime, where matter and ...

All products featured on WIRED are independently selected by our editors. However, we may receive compensation from retailers and/or from purchases of products through these links. Many physicists ...

Many physicists assume that gravitons exist, but few think that we will ever see them. These hypothetical elementary particles are a cornerstone of theories of quantum gravity, which seek to unify ...

Peer closely enough, and everything begins to look granular. Trees are made largely of quarks. Sunbeams are swarms of photons. Phones run on streams of electrons. Physicists have detected particles of ...

When it comes to understanding the fabric of the universe, most of what scientists think exists is consigned to a dark, murky domain. Ordinary matter, the stuff we can see and touch, accounts for just ...