Baby proton (left) and baby neutron (right) sit on a wooden table, holding hands....

Baby proton (left) and baby neutron (right) sit on a wooden table, holding hands. They are the same size. The baby proton is gently fed with a small spoon containing tiny glowing protons (small red opaque energy spheres). It opens its mouth, then laughs playfully, its expression shifting from curiosity to happiness. The baby neutron waits patiently, then receives its spoonful of neutrons (small...