Waves
It's the Wave-Particle Duality, Physics went down the wrong path, the Particle Path. Trying to treat everything as a quantum "Particle" all insight was lost to the importance of a "Wave" in physics. The "Wave" that is made of Light, and Neutrinos.
The Cosmic Microwave Background is the Neutrino wave, the glow of the Neutrino Ether, presenting half (1 of 3) the Oscillations of the Neutrinos as an EM-Wave to our detectors. Photon Like, but it isn't a photon, it is "Neutrino Photon", the full Blackbody Radiation spectrum of the Lord Kelvin's Vortex Ether. The exact same Vortex "Molecules" Maxwell discussed, the Neutrino Knot.
Atom 2.1 ToE, Derives the Neutrino from Space, Time and Light in the Maxwellian EM Field, the last piece of the puzzle, making Neutrino Ether and Knots the correct Theory of the Universe.
A history going back to Anaxagoras, the fifth element, "Ether". Empedocles "Aether", Plato, Aristotle, Averroes, Paracelsus, Descartes, Huygens... Even Newton who loved particles used "elastic" aether to explain gravity. It's all true, one of the best models for Neutrino Ether is a elastic Rubber Band, storing Mass and Energy as Twist and Tension of a Vortex.