PhysicsAre space and time illusions? The answer could lie in black holes Whether space and time are part of the universe or they emerge from quantum entanglement is one of the biggest questions in physics. And we are getting close to the truth Features
PhysicsHow materials that rewind light can test physics' most extreme ideas Strange solids called temporal metamaterials finally make it possible to investigate the controversial idea of quantum friction – and push special relativity to its limits Features