A theoretical particle that travels faster than light, the tachyon has long intrigued physicists and fueled decades of ...

Meanwhile general relativity has never been found lacking. Its prediction that very dense agglomerations of mass could warp space-time so much that not even light could escape from it has proved ...

Einstein’s big idea was the strange concept of space-time - the notion that space and time are woven together, and become distorted by objects with mass. Ten years before general relativity ...

According to this equation, mass and energy are interchangeable ... published his work on general relativity, mathematician ...