Although elementary particles get their masses by interacting with the Higgs field, the mass of the Higgs boson depends on those particles as well. The heaviest of these, the top quark, has the biggest impact on the Higgs mass. And based on the most recent measurements of both their masses, physicists can now use the properties of the Higgs field to deduce the state of the vacuum of space-time. The news isn’t great: our universe could be on the brink.