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Curiouser and curiouser: a riddle at the ALICE detector

12/09/25

Sarah Charley

In 2023, the ALICE experiment was ready for their best year yet, until a mysterious signal threatened everything. As the LHC wraps up its 2025 lead-ion run, physicists recall how they worked together to solve the puzzle.

Simulation showing a spray of particles created in a particle collision

12/01/07

Protecting the LHC from itself

Scientists at CERN have crafted the world’s most sophisticated machine protection system to save the LHC from itself.

An illustration depicting scale differences

12/01/07

Terascale

The Terascale is an energy region named for the tera, or million million, electronvolts of energy needed to access it. Physicists are standing at its threshold, poised to enter this uncharted territory of the subatomic world.

12/01/07

LHC cabling

It’s heavy, dusty, dirty work: Deep in the bowels of the LHC detectors, workers are rushing to connect a rat’s nest of cables.

12/01/07

Computers take on more than aliens

They started out scanning the cosmos for signs of extraterrestrial intelligence with SETI@ home. They’ve plotted chess moves, battled malaria, and folded proteins, all from their home computers. Now, volunteers are tackling particle physics with LHC@home.

12/01/07

Q&A: James Gillies

Hollywood directors, time travelers, journalists, school kids—CERN’s press office sees them all.

11/01/07

Dark energy

In the fall of 1997, I was leading the calibration and analysis of data gathered by the High-z Supernova Search Team, one of two teams of scientists the other was the Supernova Cosmology Projecttrying to determine the fate of our universe: Will it expand forever, or will it halt and contract, r

11/01/07

Déjà blue

As Clark Cully watched the movie Déjà Vu with his parents, something about the movie’s time machine—with its bright blue wedges of metal spewing a ring of wires—seemed eerily familiar.

11/01/07

On the trail of cosmic bullets

Do the most energetic particles in the universe come from supermassive black holes? New results from the Pierre Auger Observatory make that case.

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