Navy10E writes:
...both the universe, and the matter it is made of, had a begining...
No, this is not an established fact. In order to observe the beginning of something one must observe two states: 1.) the non-existence of the thing, and 2.) the temporally subsequent existence of that thing. With regard to the universe, no-one has ever observed #1. There is a point in our past where all historical world lines converge that we call the Big Bang, however the latest cosmological models (specifically the M-brane model or the Many Worlds model) do not treat this as a beginning of the universe (as "universe" is typically defined). Instead, it is simply a beginning to the meaningfulness of our common spatio-temporal references.
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