SpaceHow the electromagnetic spectrum opened our eyes to the universe Our understanding of the electromagnetic spectrum goes back to Isaac Newton, but astronomers are still finding new ways to employ it. Astrophysicist Emma Chapman explores how much these invisible waves can reveal to us about the cosmos – and whether they might show us that we’re not alone Comment
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