An earlier story posted here, discussed the presence of water around a most distant supernova remnant. The gas surrounding the star had been fused by the shockw

An earlier story posted here, discussed the presence of water around a most distant supernova remnant. The gas surrounding the star had been fused by the shockwave into an expanding sphere of nearly uniform oxygen which then combined with the remaining hydrogen to produce an enormous volume of damp air. Just a few molecules per cubic meter or less. Estimated at ten trillion times the entire volume of water on earth. Seemed like a lot at the time. So that was early oxygen. But atypical.