Albert Einstein’s theory of general relativity foretold space-bending beasts, cosmic shock waves and mysterious forces.

General relativity has withstood perhaps its toughest challenge to date. The theory, which Albert Einstein published in 1916, revolutionized our understanding of physics and the cosmos.

The General Relativity Rabbit Hole: Unraveling Space, Time and the Fourth Dimension Parsing Albert Einstein's theory of our universe -- an idea that's utterly mind-bending, yet seemingly shatterproof.

The accelerating expansion of the universe could be explained by modifying general relativity so that gravity has mass – or so thinks a small group of physicists. Matthew Francis reports What lies ...

Astronomers watched a pair of pulsars for 16 years to test the theory of general relativity, which has stood unchallenged for over a century.

Milky Way’s black hole provides long-sought test of Einstein’s general relativity LARES-2 packs around 295 kilograms of material into a sphere less than 50 centimetres across.

General relativity has withstood perhaps its toughest challenge to date. The theory, which Albert Einstein published in 1916, revolutionized our understanding of physics and the cosmos.