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New Atom-Smashing Magnet Passes First Tests

A powerful new magnet to replace existing ones in the world's largest atom smasher, the Large Hadron Collider, just passed its first test with flying colors. Full story

Large Hadron Collider stops for two years of tune-ups, goes out on a high note (video)

We've long known that the Large Hadron Collider would need to take a break, but that doesn't take the edge off of the moment itself: as of Valentine's Day, the particle accelerator has conducted its last test for the next two years. The giant research ring will undergo sweeping repairs and upgrades Full story

Rare Particle Find May Cast Doubt on Popular Physics Theory

An extremely rare particle measurement from the world's largest atom smasher could cast doubt on a popular theory about the fundamental building blocks of the universe, including dark matter. Full story

Atom smasher won't destroy Earth: court

A woman concerned that the Large Hadron Collider (LHC) will create black holes and destroy the Earth lost a court appeal to shut the atom smasher down on Tuesday. Full story

Physicist says ‘new particle observed’

   CMS spokesperson Joe Incandela reports in a CERN video that a new particle has been observed at Europe's Large Hadron Collider.

Moon's tides affect atom smasher, too

The world's largest atom smasher has tides, it turns out. The moon, which pulls Earth's seas in and out with its gravity, similarly affects the Large Hadron Collider in Europe, requiring physicists to make periodic adjustments to the extremely sensitive machine. Full story

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Exotic antimatter particle exhibits new conduct

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Collider opens up a fresh big-bang frontier

Scientists collide lead ions in Big Bang machine

Aging U.S. particle accelerator gets more time

Atom smasher ramps up chase for 'God particle'

Scientists excited by Big Bang machine experiments

Atom smasher produces way-out tunes

Related Photos

A technician cycles in the LHC at the CERN in Cessy
A technician cycles in the LHC at the CERN in Cessy

A technician cycles in the Large Hadron Collider at the Organization for Nuclear Research in the French village of Cessy near Geneva in Switzerland April 15, 2013. As hundreds of engineers and workers start two years of work to fit out the giant LHC particle collider to reach deep into unknown re

Proton-proton collisions at the Large Hadron Collider in Geneva
Proton-proton collisions at the Large Hadron Collider in Geneva

Proton-proton collisions at the Large Hadron Collider in Geneva

Higgs boson simulation
Higgs boson simulation

A computer simulation shows what the Large Hadron Collider's ATLAS detector would see when the decay of a Higgs boson results in the production of two gamma rays. The blue beads indicate intermediate massive particles, and the bright green rods are the gamma-ray tracks.

Control center
Control center

Scientists monitor operations at the Large Hadron Collider.

Xi-b decay
Xi-b decay

This schematic shows how the excited neutral Xi-b baryon decays into other subatomic particles that could be detected at the Large Hadron Collider's Compact Muon Solenoid.

ATLAS control center
ATLAS control center

Richard Hawkings, ATLAS physics coordinator at the European CERN particle physics center, watches over computer displays at the control center for the Large Hadron Collider's ATLAS experiment. The LHC has started proton collisions at the unprecedented energy level of 4 TeV per beam.