A quark is a type of elementary particle and a fundamental constituent of matter. Quarks combine to form composite particles called hadrons, the most stable of which are protons and neutrons, the components of atomic nuclei. All commonly observable matter is composed of up quarks, down quarks and electrons. Owing to a phenomenon known as color confinement, quarks are never found in isolation; they can be found only within hadrons, which include baryons and mesons, or in quark–gluon plasmas. For this reason, much of what is known about quarks has been drawn from observations of hadrons. Quarks have various intrinsic properties, including electric charge, mass, color charge, and spin. They are the only elementary particles in the Standard Model of particle physics to experience all four fundamental interactions, also known as fundamental forces, as well as the only known particles whose electric charges are not integer multiples of the elementary charge.

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SLS Hurricanes, James Webb Fixed, Strange Quark Star

A quark star may have just been discovered

Gravitational waves could reveal the existence of quark matter

Never-before-seen 'strange quark star' may have formed after cosmic collision, physicists say

Strange quark star may have formed from a lucky cosmic merger

Physicists surprised to discover the proton contains a charm quark

Difficult-to-observe effect confirms the existence of quark mass

Large Hadron Collider finds new way to measure mass of a quark

Large Hadron Collider Measures Mass of the Top Quark With Unparalleled Accuracy

CERN Physicists Measure Mass of Top Quark

Homing In on the Higgs Boson’s Interaction With the Charm Quark at the Large Hadron Collider

Physicists Detect Exotic Particles in Quark-Gluon Plasma

Scientists make first detection of exotic 'X' particles in quark-gluon plasma

Large Hadron Collider: First Detection of Exotic “X” Particles in Quark-Gluon Plasma

Scientists have reported new clues to solving a cosmic conundrum: How the quark-gluon plasma – nature’s perfect fluid – evolved into matter

Using particle accelerators to investigate the quark-gluon plasma of the infant universe

Exotic Four-Quark Particle Spotted at Large Hadron Collider

Using particle accelerators to investigate the quark-gluon plasma of the infant universe

A new study has highlighted the surprising similarities between quark-gluon plasma, the first matter thought to have filled the early Universe, and water that comes from our tap.

Quark-Gluon Plasma – Which Filled the Universe Shortly After the Big Bang – Flows Like Water