In fact, the new work confirms that the mass of the stuff around us is due only in very small part to the masses of quarks themselves. Most of it comes from the way they interact inside baryons. “Ninety-nine per cent of the mass of the proton and neutron, and therefore the visible Universe, is QCD binding energy,” says Davies. “The Higgs then just explains the 1% of it that comes from quark masses.” All the same, she adds, where that last per cent comes from is still “a very important fundamental question”.