Under that reasoning, certain exotic structures of spacetime called closed timelike curves may be real—and they may allow a ...

This video explores why gravity is far stranger than the simple force most people imagine. It breaks down how gravity is ...

By taking general relativity into higher dimensions, a trio of physicists has proven that a mathematical pattern of ripples ...

Some things in cosmology may simply be unknowable. Why is there something rather than nothing? What lies outside the universe? What is inside a black hole? That last one has been niggling at ...

Astronomers have detected spacetime itself being dragged and twisted by a spinning black hole for the first time. The discovery, seen during a star’s violent destruction, confirms a prediction made ...

A quasar that is the first in the early universe to be found by its flicker, more luminous than 2 trillion suns, could reveal how supermassive black holes grow.

Alongside the famous gigantic black holes, physics also allows for microscopic versions. They emerge from so-called critical states, when spacetime organizes itself into a regular, crystal-like ...