An esoteric particle called the muon wobbles weirdly in a magnetic field, and physicists around the world go a frothing frenzy of excitement ... because maybe these wobbles mean new physics! The experiments at Fermilab and Brookhaven labs disagree quite firmly with theoretical calculations, which is exciting. And because new physics can be tested with modern astronomy — sometimes it's the only way we can explore the boundaries of the theories of the universe — then Emily is keen to understand just what's going on. So maybe we've just seen signs of new forces, new particles, even supersymmetry ... but then again, maybe not.