Gravitons are proposed quantum particles that form gravitational fields. Just as electromagnetic fields produce photons, which can be seen with image intensifiers, physicists believe that gravitational fields produce gravitons. However, because the...

In physics, the graviton is a hypothetical elementary particle that mediates the force of gravity in the framework of quantum field theory. If it exists, the graviton must be massless (because the gravitational force has unlimited range) and must have a...