Water Older Than the Sun

The water in your cup did not come from a river. It did not come from rain, or a glacier, or the sea. Follow it back far enough and you arrive somewhere the Sun has not yet lit — a dark, freezing cloud of gas and dust drifting between stars, four and a half billion years ago. In there, in the cold that makes Antarctica feel tropical, water was forming molecule by molecule on the surfaces of tiny grains of dust. Slowly. Without any planet to fall on. Without any sky above it. Just ice, in the dark, between the stars. Then something disturbed that cloud — a dying star nearby, maybe, shuddering in its last breath — and it began to collapse. The cloud became a disc. The disc became the Sun and everything circling it. And some of that ancient ice survived. It rode inside comets and asteroids, locked away from the heat, preserved in the dark interiors of rocks that fell, eventually, onto a young and ocean-less Earth. The oceans you know — the rain, the rivers, the coffee — they came from that delivery. From ice that was already old when the Sun was new. Right now the water in your body has been water since before this solar system existed. It has never stopped being water. It was only ever waiting to become you.