Or rather, it's a particle that matches the description of the Higgs Boson.
[link]http://www.cnn.com/2012/07/04/tech/physics-higgs-particle/index.html[/link]
Basically, the Higgs Boson is an elementary particle that gives mass to other elementary particles, like quarks and electrons. Scientists have been searching for it for years, and now they probably have it. It explains the origin of mass, and that's just fantastic. I could elaborate, but you should probably just read the article, or google it. That'll explain it much better than I could.
[link]http://www.cnn.com/2012/07/04/tech/physics-higgs-particle/index.html[/link]
Basically, the Higgs Boson is an elementary particle that gives mass to other elementary particles, like quarks and electrons. Scientists have been searching for it for years, and now they probably have it. It explains the origin of mass, and that's just fantastic. I could elaborate, but you should probably just read the article, or google it. That'll explain it much better than I could.