The theory of special relativity is rife with counterintuitive and surprising effects, the most famous of which are length ...

Einstein received the Nobel Prize for one of the other ideas, but the special theory of relativity has since become the most well-known, perhaps of his career or even the entire field of physics!

New research has unveiled a previously unacknowledged effect of Einstein’s relativity theory similar to time dialtion and ...

Gravitational distortions produced by distant galaxies show a slight—but notable—disagreement with Einstein's predictions.

General relativity is physicist Albert Einstein's understanding of how gravity affects the fabric of space-time. The theory, which Einstein published in 1915, expanded the theory of special ...

Einstein’s special theory of relativity governs our understanding of both the flow of time and the speed at which objects can move. In special relativity, the speed of light is the ultimate speed ...

Scientists test the famous physicist’s predictions by calculating the distortion of time and space. Why is the expansion of ...

According to physicist Albert Einstein's theory of special relativity, on which much of modern physics is based, nothing in the universe can travel faster than light. The theory states that as ...

Special' means ‘in certain circumstances’ – so not including the effect of gravity. It took Einstein 10 years to make the theory work for gravity too, which is how general relativity gets ...