General relativity stands as one of the bedrock theories in modern physics. Its strange view of relative time and space has been confirmed by countless experimental and observational tests, from ...

Einstein’s general theory of relativity can be summed up in just 12 words: “Space-time tells matter how to move; matter tells space-time how to curve”. But this short description from the physicist ...

Before Einstein, physics looked almost finished. The universe seemed to behave like an excellent Swiss railway timetable. Matter moved. Forces acted. Time ticked away in the background like a reliable ...