We Found a Dead World 2,900 km Beneath Your Feet

Almost 2,900 kilometres beneath the ground you are standing on, two masses the size of continents are resting against the outer edge of the core. They are denser than everything around them, chemically different, and they have been there for almost the entire history of the world. No drill will ever reach them. We know they exist only because earthquakes revealed their shape. This is a long, quiet journey outward from that discovery. Planets that drift through interstellar space with no sun in their sky, one of them feeding on gas at six billion tonnes per second. Dead stars carrying the crushed remains of their own worlds across their surfaces. A sealed tube of rock waiting on a cold plain for a laboratory it may never reach. A neighbouring world that suffocated so slowly nothing standing on it could have noticed. A twin planet that lost an entire ocean and still carries the record of it in the air. Hidden seas beneath kilometres of ice. Visitors from other systems passing through our own. And underneath all of it, one question that changes the way the night sky looks: whether the conditions for a living world are common, and whether being in the right place has ever been the same thing as staying alive.