Is there anything smaller than an atom?

Then there are the forces that join those things up: light is one of them. Light is carried by little particles called photons. And there is the Higgs boson particle, which we found last year, which is also smaller than an atom. read more

Not anything obviously (like a cat) but if you are asking if there are things smaller than an atom ( electrons, nutrons, protons) then yes, of course. Atoms themselves are made up of smaller parts and an atomic nucleus will obviously be smaller than the atom as a whole and even that is not erm..”solid” per se but composed of even smaller bits. read more

This is the pentaquark. It's smaller than an atom, and until now, no one knew it existed. read more