Einstein’s general theory of relativity has been tested for the first time over distances nearly as large as the universe itself – and has, in the process, trumped most other alternative theories of ...

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

Researchers at the Technion-Israel Institute of Technology have measured “dark points” inside light waves that appear to travel faster than light itself, confirming a theoretical prediction made half ...

Add Yahoo as a preferred source to see more of our stories on Google. An artist's rending of the moment before falling into a black hole. You can see a starry galaxy and strips of bright light bending ...

The argument comes from Andrzej Dragan and Krzysztof Turzyński of the University of Warsaw, building on earlier work by Dragan and Artur Ekert, including the paper “Quantum Principle of Relativity” in ...

Time seems to be one of the most obvious things in the universe: it moves forward, seconds change minutes, and the past cannot be returned. However, modern physics has long shown that everything is ...