Where did the universe come from? Atheistic origin science has no answer.

[Alex K]

'Zactly.

Absolutely nothing means absolutely nothing. It does not include a universe creating potential in an omnipotent being.

I'm not a fan of the quantum fluctuation supposedly responsible for the origin of the universe "coming from nothing." This is inferred from models which are extrapolated beyond a point at which they lose predictive powers.

Also 'Zactly. I'd go even further and say that we extrapolate the usage of words beyond the point where they still have any meaning
Not a fan of philosophical interpretations a la Krauss.

Before that (causally, but not temporally as it was from this event that time itself emerged) the laws we've discovered by observation of existing consistencies may not hold.
So conditions predicted by such laws also lose legitimacy.

Yup. "Before time"=nonsense

I find it quite plausible that the event which caused the universe involved a dimension into which we cannot look.

It's a very popular speculation in superstring theory which has been worked out in considerable detail that inflation and the bang were driven by the dynamics of lower-dimensional branes (on one of which we live) in a 10-dimensional space. Their mutual energy depends on their distance in the higher dimensions, and them coming together frees some of it, roughly speaking.

If a two dimensional puddle receives a raindrop falling from a 3d sky, the impact just happens from the viewpoint of the flatlanders on the surface of the puddle.

Yes, roughly like that. The only things that see in those other dimensions are gravity related forces. If the distance in the higher dimensions is largeish, this does not have much impact on gravity as we see it.