NICOLLE R. FULLER / SCIENCE PHOTO LIBRARY NICOLLE R. FULLER / SCIENCE PHOTO LIBRARY
Higgs boson, conceptual image. Computer illustration showing a Higgs boson particle, which was formed by the collision of two protons, decaying into two photons. The Higgs boson is thought to give other particles mass. The first sighting of it was announced by scientists at CERN on 4th July 2012.
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