In this multiverse theory, in layman’s terms, there is a static universe in the middle. From that, smaller universes pop off and travel in different directions, or arrows of time. And the Big Bang was one of these pop offs. It is this arrow of time that gives us the feeling of progress, the feeling of flowing or moving through time.  And because the arrow of time is one directional, we cannot go back to the past. The static universe in the middle has time as a coordinate but there's no arrow of time. There's no future versus past; everything is equal to each other. Time we perceive today started about 14 billion years ago after the Big Bang which marks the birth of the galaxy our solar system is part of.

Obviously the science behind this is far more complicated, so based on my limited understanding so far, I wonder if the void I experienced is the static universe and somehow our consciousness -- a neuronal energetic field -- can access that far place via the principles of quantum mechanics theory.  This potential connection between cosmology and consciousness is so fascinating to me.  The more I seek, the more remains mysterious while the more seem to converge.