Discover how Einstein’s theory of special relativity reshaped physics by linking space, time, mass, and energy in a universe governed by the speed of light. Albert Einstein's 1905 theory of ...

When an object moves extremely fast—close to the speed of light—certain basic assumptions that we take for granted no longer ...

Machine learning helped show how harnessing the weird effects of Einstein’s special relativity could enable a new kind of ...

Einstein’s strangest optical illusion has been captured—thanks to lasers, a cube, and a bit of artistic inspiration.