There is no mystery to what happened in the beginning. The Holy Writ explains the beginning so simply anyone should understand it.
Let us investigate the evidence.
In Genesis 1 the Bible states: In the beginning God created the heaven and the earth.
2 And the earth was without form, and void; and darkness was upon the face of the deep. And the Spirit of God moved upon the face of the waters.
3 And God said, Let there be light: and there was light.
4 And God saw the light, that it was good: and God divided the light from the darkness.
In this statement the term "earth" represents matter which we can see.
The term heavens represents what we cannot see.
There was no form or no geometry to anything.
The "deep" was "darkness"
The "deep" we know today was and is dark energy and dark matter that has been around always.
When the Spirit of God moved in the dark energy and matter that movement caused energy to discharge from the dark matter causally and gave off enormous sparks of energy within the visible spectrum and heat spectrum causing points in the entire dark matter to form galaxies that we observe today.
The Bible starts with dark energy and matter as being here already.
This analogy has no need for an "event horizon" no worry about "mono-poles" because dark matter likely was made of "mono-poles" and once they were disturbed by the "Spirit" [or opposite polarity] of God this lightning storm began homogeneously and is still popping galaxies into being as we speak.
It is so simple a cave-man understood it and wrote it down for us to see.