(March 23, 2012 at 11:10 pm)Stimbo Wrote: The embryo Universe was indeed filled with light for the first 300,000 years. This was a direct result of the insanely hot plasma state of the Universe post BB, causing the electrons to be moving too fast to attach to any nucleus. Light waves were being continually scattered by the charged particles they encountered, effectively trapping them and creating a dense foggy sea of light (as it has been rather lyrically described). Only when the temperature had fallen to the point where electrons began being captured by hydrogen and helium nuclei (an event known as recombination) could the Universe became transparent for the first time. The light waves were able to pass unhindered through space and have done so ever since, although due to the expansion of the Universe they have been stretched well into the infrared range.
And, as C/D pointed out, this all happened long before anyone was around to see it, much less be evolved enough to write it down.
That must have been the moment when God said "let there be light".
