Our fifth story in the LHC Physics at Ten series looks at how the LHC has recreated and greatly advanced our knowledge of the state of matter that is believed to have existed shortly after the Big Bang

The result opens the path to study in a new and unique way the extreme state of matter that is thought to have existed shortly after the Big Bang

A combination of theoretical calculations and information from astronomical observations indicates that massive neutron stars can contain cores filled with free quarks

The first measurement, by the ALICE collaboration, of an elliptic-shaped flow for bottomonium particles could help shed light on the early universe

ALICE, ATLAS, CMS and LHCb presented their key physics results at an end-of-year series of talks

The first collisions of lead nuclei mark the start of the latest LHC heavy-ion run

The main LHC collaborations present a wealth of new results at this year’s Quark Matter conference

The first observation of a neutron-star merger by the LIGO and Virgo collaborations has allowed researchers to improve the theory of quark matter

Published in Nature Physics ALICE reports proton collisions sometimes present similar patterns to those observed in the collisions of heavy nuclei

The LHC experiment collaborations presented their latest results at the Quark Matter conference on how matter behaved in the universe's first moments

For the third time ever the LHC today began colliding beams of protons with lead ions to probe the early universe from which matter emerged

There were presentations from ALICE, CMS, ATLAS and LHCb at the international conference on ultrarelativistic heavy-ion collisions this week