A record number of collisions happened in and around Geneva over the past week-but none were accidents. They were some of the most carefully planned collisions in history, and are designed to make history by yielding answers to some of the biggest questions of modern physics.
After several setbacks over the past two years, the 27km long particle
accelerator ring-shaped tunnel, 100m below Geneva, was fired up last
week to start the hunt for dark matter, new forces, new dimensions, the
origin of mass, and the presence of abundant dark matter in the
universe.
It's superconducting magnets accelerate particles. Two beams of
particles called hadrons are sent hurtling around the ring in opposite
directions, close to the speed of light at very high energies, and are
encouraged to collide. Large Hadron Collider LHC
"This is the moment we have been waiting and preparing for", said a
spokesperson "We're very much looking forward to the results from
proton collisions to give us new insights into the evolution of matter
in the early Universe."
The high-energy collisions produced by the LHC will re-create the
conditions that governed the moments just after the Big Bang. Physicists
hope that the collisions will create particles, even if only for a tiny
instant, that have never been observed: they are the missing links of
modern physics.
There's more to the Universe than meets the eye. Observations have shown
that the things we can observe -- what's on our own planet and the
planets, stars and galaxies in space -- only make up 4% of the stuff
that's out there! The rest doesn't emit any electromagnetic radiation --
light -- and so we can't detect it by conventional methods. We know that
it exists, though, because of its effects: the celestial bodies we can
observe respond to gravitational forces much greater than those
accounted for by known matter, and the Universe's expansion is
accelerated by some strange repulsive force.
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