This is not the case, because non-ionized atomic hydrogen is observed, even though it requires less energy to ionize the atomic than the molecular form of hydrogen. H 2 will also be discovered. The presence of H 2 also has important consequences regarding the origin of the universe and the interpretation of the cosmological redshift. We know that light interacts with a transparent medium, because its velocity is reduced, without scattering, as calculated and observed using the simple index of refraction of gases. Cosmic light, moving across billion of light years, suffers an almost unimaginable number of collisions with those transparent molecules of hydrogen in the universe.
Light is a wave-train of electromagnetic radiation.
Consequently, the redshift following the collision of a photon with H 2 is indistinguishable from the phenomenon caused by the Doppler effect. Since a much larger amount of molecular hydrogen than previously admitted has been observed in the universe, we can now see how this hydrogen is responsible for the redshift observed. That molecular hydrogen is responsible for the redshift which is erroneously believed to have a cosmological Doppler origin. It is unfortunate that the existence of H 2 has been ignored for so long. It is also true that the problem would not have arisen, if the arguments presented by this author and others for the necessary presence of H, had been heeded.