SpaceWe are finally closing in on the cosmic origins of the “OMG particle” Three decades ago, we spotted the single most energetic particle ever seen, nicknamed the 'Oh-My-God particle'. Since then, we have seen many more ultra-high-energy cosmic rays – and now we are unravelling the mystery of what produces them Features
PhysicsHow we could discover quantum gravity without rebuilding space-time In the search for a theory that unites general relativity and quantum physics, many have tried to rethink space-time. But what if space-time emerges naturally, like a hologram? Features