Thanks for your replies. Just one more question for now: could you tell me what the relationship is between the "early, hot and dense state" you mention and the "singularity"?
Hi
My academic background is in philosophy, and I know very little physics. My attraction to the principle of sufficient reason motivates my question.
My understanding of one theory of the origin of the universe is that it started with a "singularity" which then exploded into our universe. It...