Find out more about available formats and browse any associated online resources. General relativity is a subject that most undergraduates in physics are particularly curious about, but it has a ...

Albert Einstein's theory of general relativity—which explains gravity as the product of the distortion of space and time—may not be universally applicable. This is the conclusion of physicists ...

Check if you have access via personal or institutional login Experts Plebański and Krasiński provide a thorough introduction to the tools of general relativity and relativistic cosmology. Assuming ...

“We proved that the Einstein field equation from general relativity is actually a relativistic quantum mechanical equation,” ...

String theory attempts to unify all four forces, and in so doing, unify general relativity and quantum mechanics. At its core is a fairly simple idea—all particles are made of tiny vibrating ...

The instrument is creating the largest map of the universe. In mapping, it revealed how large cosmic structures stick ...

An international research team's new calculations of the distortion of time and space presents new challenges to predictions ...

Researchers used the Dark Energy Spectroscopic Instrument to map how nearly 6 million galaxies cluster across 11 billion years of cosmic history. Their observations line up with what Einstein's theory ...

On 25 November 1915, Albert Einstein presented his general theory of relativity at the Prussian Academy of Sciences. This theory is still considered to be the most important idea in modern physics.