The Muon g-2 experiment recently made the most precise measurement ever carried out with a particle accelerator: how fast muons "wobble" when put near a magnet. This measurement is so precise, it opened up gaps in our understanding of the universe, and was awarded the $3M Breakthrough Prize in Fundamental Physics in 2026. As one of the researchers involved, I'll explain what a muon is, how the experiment worked, what it told us, and how such an esoteric measurement went right to the heart of the Standard Model of Particle Physics and how the strange quantum universe really works.