We’re normally taught in schools that protons are really, really, really, REALLY, tiny dots of charge. Rather than having integer charge, quarks have fractional charge. Scientists at the Thomas Jefferson National Accelerator Facility have measured the pressure inside the proton for the first time. Not only did the team find out about the pressure within the proton but the pressure distribution. It was found that near the center of the proton there was a repulsive pressure which then became a binding pressure at larger distances.

Source: Forbes May 27, 2018 14:14 UTC