SpaceWhy the vast emptiness of space isn't really that empty after all Space-time may seem empty, but the expanse between stars is filled with more interesting stuff than you may think, writes Chanda Prescod-WeinsteinComment
PhysicsUltracold atoms can work together to shape or steer light When a collection of atoms is cooled to just above absolute zero, they can act as one, and control light through their electrical and magnetic interactions with it News