At the extremes, physical reality is utterly different than the world we perceive each day. Unlike our solar system with distinct planets neatly orbiting the sun, inside an atom, an electron doesn’t orbit a nucleus, but has a form that can only be described as a cloud of probability. It doesn’t orbit. It surrounds the nucleus like a fog.

Quantumly speaking, electrons are in superposition. In this state, subatomic particles don’t exist in any one place. There is only a certain probability of bein...