Although general relativity (GR) is an elegant theory of gravity, we don't often need to use it. For most gravitational ...

Quantum entanglement is a physical process through which pairs of particles become connected and remain so even when separated by vast distances. This fascinating phenomenon has been the focus of ...

A newly merged black hole does not become quiet at once. It vibrates, sheds energy through gravitational waves and produces a ...

General relativity describes gravitation as the curvature of spacetime sourced by energy and momentum. In many astrophysical and cosmological contexts, matter is idealised as a perfect fluid, whose ...

Cosmological dynamics under the framework of general relativity seeks to describe the evolution of the Universe by coupling Einstein’s field equations to the matter and energy content of spacetime.

Monisha Ravisetti was a science writer at CNET. She covered climate change, space rockets, mathematical puzzles, dinosaur bones, black holes, supernovas, and sometimes, the drama of philosophical ...

Observing time distortions could show whether Einstein's theory of general relativity accounts for the mysteries of dark matter and dark energy. When you purchase through links on our site, we may ...

See more of our trusted coverage when you search. Prefer Newsweek on Google to see more of our trusted coverage when you search. Albert Einstein's theory of general relativity—which explains gravity ...

Albert Einstein’s mind reinvented space and time, foretelling a universe so bizarre and grand that it has challenged the limits of human imagination. An idea born in a Swiss patent office that evolved ...

Dark energy revived Einstein’s discarded cosmological constant and reshaped the leading model of the universe.

Some of the hardest questions in cosmology begin where the usual math gives up. Push Einstein’s theory far enough back toward ...