Gluism

Gluism (the Strong Force) was an immensely powerful fundamental force responsible for holding together quark based matter. It was carried by gluons, and it was over 100 times more powerful than electromagnetism.

Properties
Gluism held together groups of quarks to form hadrons (on this scale it was referred to as the Colour Force), and also held together hadrons to form nuclei of atoms (on this scale it was referred to as the Nuclear Force). Despite its strength, Gluism had a limited range and required precise arrangement of particles in order to function. The nuclear force tended to weaken in large atomic nuclei due to the limited range, and this was the reason for radioactivity in heavy elements, a phenomenon used to produce energy and weapons. The requirement for precise particle positioning meant that only two types of hadron (and their antimatter equivalents) could exist solely through Gluism alone. Other types of hadron, when used in technology, were often stabilized using artificial forces.

Manipulation
Due to its immense power compared to that of electromagnetism, gluism could only rarely be manipulated by force users. However, when this was done, it could have grave consequences, as an individual capable of using the force to manipulate gluism could unleash nuclear energy at will. Palpatine was supposedly capable of manipulating gluism.