Strong Nuclear Force

The Strong Nuclear Force (Strong Interaction) is the most powerful force in our Universe.  Up until recently, it was thought that this was the force holding atomic nuclei together against repelling protons.  But this was found only to be an effect of the real Strong Nuclear Force (once the real force was discovered this effect was named the Residual Strong Nuclear Force).  The real force holds hadrons, but primarily protons and neutrons (collectively called nucleons) together.  This force is carried by gluons (named for glue) which connect quarks.