A novel theory of 'wavy space-time' suggests that the division between our best descriptions of the universe on its smallest and largest scales may be because gravity does not play by quantum rules.

Textbooks give strange, imprecise explanations of where things happen in quantum mechanics. Consistency with gravity needs a fresh approach.

“Space-time and gravity must ultimately emerge from something else,” writes physicist Brian Swingle in the 2018 Annual Review of Condensed Matter Physics.

Two possible entanglement patterns in de Sitter space, representing entangled bits of quantum information that may enable space, time and gravity to emerge.

One of the most powerful uses of bumblebee gravity models is to potentially explain dark energy —the phenomenon responsible for the observed accelerated expansion of the universe.

Einstein’s general theory of relativity, which is used to describe the gravity of black holes, uses a single field equation to explain how space curves and matter moves. But that equation uses a ...

General relativity fails at describing the interior of black holes, so scientists have turned to loop quantum gravity theory, which sees space-time as a mesh of tiny loops.

One of the most robust 1,2 expectations for quantum gravity—the theory describing the interplay between gravity and quantum mechanics—is that space-time itself at the smallest scales should ...

Recently, a promising burst of research on quantum gravity has provided an outline of what the reconciliation might look like—as well as insights on the true nature of time.