Physicists' main goal is to be able to predict what will happen in the future based on patterns they have already observed, whether in massive systems of stars or tiny groups of atoms. Predicting changes over time usually requires developing new mathematical equations. But a researcher at California Institute of Technology recently discovered that a well-known formula, Schrödinger's equation, governs two vastly different things: Particles smaller than an atom and the disks of matter that fill the universe.