Quarks make up all matter, but have never been seen by themselves. And they have “flavors” and “colors” — though neither term has any relevance to what they actually do.

Deep within the atoms that make up our bodies and even within the protons and neutrons that make up atomic nuclei, are tiny particles called quarks.

Scientists theorize there could be subatomic particles we have yet to discover. Here are five of the weirdest, rarest ...

Strange Matter might be the most bizarre and potentially dangerous form of matter in the Universe. Unlike the atoms and molecules that make up everything around us, Strange Matter is composed of ...

The up and down quarks are stable and make up protons and neutrons, Live Science previously reported. For example, the proton is composed of two up quarks and a down quark, and is denoted as (uud).

They’re quarks. Every proton has three main quarks – called valence quarks. They can be up quarks or down quarks. Quarks are the reason protons have a positive charge.

Theorists have calculated how quickly a melted soup of quarks and gluons -- the building blocks of protons and neutrons -- transfers its momentum to heavy quarks. The calculation will help explain ...

However, it was uncertain whether heavy quarks might also regularly help make up protons. The configuration of quarks in baryonic particles.

There are six flavors of quarks that are dubbed up, down, strange, charm, beauty/bottom, and truth/top. Up and down quarks, for example, make up the protons and neutrons in the atomic nucleus.

Quarks and leptons are fermions — the elementary particles that make up matter. Another group of particles, known as bosons, act as "force carriers." ...

Axions are lightweight particles that could make up dark matter, the substance theorized to make up the majority of the universe. The particles could also account for a problematic property of quarks.