Dark matter’s ‘gang of four’

Next week, the Large Hadron Collider at Cern will be fired up again after a two year programme of maintenance and upgrading. When it is, the energy with which it smashes particles will be twice what it was during the LHC’s Higgs boson-discovering glory days.

It is anticipated – hoped, even – that this increased capability might finally reveal the identity of “dark matter” – an invisible but critical entity that makes up about a quarter of the Universe. BBC Horizon has been speaking to scientists who helped develop our best theories of dark matter. Via BBC

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