SpaceHidden black hole could explain mystery at the heart of our galaxy The area surrounding our galaxy’s central supermassive black hole contains three strangely different populations of stars – but one hidden black hole could explain all of them News
PhysicsThe daring idea that time is an illusion and how we could prove it The way time ticks forward in our universe has long stumped physicists. Now, a new set of tools from entangled atoms to black holes promises to reveal time’s true nature Features