Re: Newbie Question


salvatore wrote:
> Just after the big bang why electrons began to rotate around
> positives particules, if all particules were, as it is said, all merged
> in
> a plasma ?

As the universe expanded, it cooled and the average energy per particle
dropped low enough that electrons could be bound to atoms. At this
point, radiation could no longer couple freely to matter and the
radiation that had been happily transfering energy back and forth
with plasma became what is now the cosmic microwave background.

-jc

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