This huge circular tunnel created by scientists at the European Organisation for Nuclear Research or CERN contains more than 1,000 cylindrical magnets arranged end-to-end.
Their purpose is to steer a beam — made up of particles called protons — around the 27km-long circuit.
Two channels of protons, moving at a speed of 11 thousand laps of the tunnel per second, will be made to collide at close to the speed of light.
Four huge “detectors” will monitor the collisions for interesting events.
Scientists are hoping that new sub-atomic particles will emerge, revealing fundamental insights into the nature of the cosmos.
These range from the possible discover of the Higgs-Boson or so-called God particle, explaining the origin of mass in the universe, to a better understanding of “dark matter” and the existence of other dimensions.
CERN says the risk of a black hole being created which could destroy the earth is virtually zero. A last minute legal challenge to the experiment on these grounds has been dismissed.