Thanks Gary,
While I find that I can understand basic principles of the Big Bang theory, I'm a long way from fully comprehending the idea that all matter originated in that one instant.
At the moment I'm grappling with a notion, which may be mistaken, that space is created through expansion, rather than matter expanding into empty space. It is hard to understand there is no "outside" into which space expands. This metaphor probably doesn't make sense...
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