I've often thought that our "Big Bang" theory has got to be one of the dumbest ideas offered as an explanation of anything. Seth makes a lot more sense. In reality, we create an instance of this universe in each moment of physical experience according to our beliefs about linear time, physical laws, form, etc. As such, at each moment we give ourselves the illusion of a beginning and fuss about the theoretical ending.
What is real is each moment. Each moment is a 3D painting in form and atoms of an underlying state of consciousness and living energy. We're like an artist in Kindergarten with thick crayons and poor coordination. Imagine the representations of this very moment in more evolved and more expressive realities! (Wine may help here!).
"When you ask about the beginning of a universe, you are speaking of a visible universe.
"There is consciousness within each conceivable hypothetical point within the universe. There is therefore "an invisible universe" out of which the visible or objective universe springs.
... "Your universe did not emerge at any one point, therefore, or with any one initial cell - but everywhere it began to exist at once, as the inner pulsations of the invisible universe reached certain intensities that "impregnated" the entire physical system simultaneously."
(The Nature of the Psyche, Session 797)