: "The Alien Discovery That Fell Apart"

A telescope pointed at a faint dot more than 120 light-years away, and for a moment it looked like we'd caught the first sign of life beyond Earth. The world leaned in. Then the evidence began to come apart. K2-18b was supposed to be the planet that changed everything — a warm ocean world wrapped in hydrogen, carrying a molecule that on Earth is made almost only by living things. But the way that signal rose and quietly collapsed says less about a distant exoplanet than it does about us: how badly we want to believe, and what it takes for science to argue itself back down to the ground. This is the full story of the discovery that almost was — and why the universe still hasn't answered.