Superconductivity give mass to photons. Superconductivity is like the Higgs field. The higgs field gives mass to particles and superconductivity gives mass to photons, This is why and electric field goes around a superconductor, the photons have mass.
Dark matter must come from the superconductivity produced by Rydberg matter formed from hydrogen atoms in space. The photons that must deal with those superconductors get heavy and add mass to the universe. http://physics.stackexchange.com/questions/47791/what-do-massive-photons-have-to-do-with-superconductivity
