If you were asked to think about a physical phenomenon that’s responsible for any sort of force in the Universe, what answer would you give? Most people, when asked, respond with one of two answers. Most people will give gravity as their answer: the attractive force between all objects with mass or energy. Alternatively, they’ll list any other force that occurs between atoms on Earth, all of which are some manifestation of the electromagnetic force. Either: there’s an attractive force between two particles with mass-or-energy, as in gravitation, or there’s an attractive or repulsive force between systems of charged particles either at rest or in motion, as in electromagnetism. But those are only two of the four fundamental forces (at least, we think there are only four ) known to physicists today. The other two forces, however, are arguably at least as important for creating the collections of matter and energy that exist in the Universe: the nuclear forces.…