The Higgs Boson really, really is the Higgs Boson.

At first, testing at the Large Hadron Collider revealed a particle that was likely the Higgs Boson, the theorized particle that gives the universe its mass. Then, more tests confirmed we were even more sure about it–there was a one-in-550 million chance it wasn’t the Higgs. Now, after even more tests, it’s been confirmed: beyond a shadow of a doubt, the particle uncovered is the Higgs.