It's impossible to discover/discern/observe/measure how this universe was created. We don't even know what mass is.
We have no idea of what present physicality is, let alone of what it was in the past.
And physicality is only a small part of reality. Reality comes from thought. Reality is subjective.
We only have physicality as a common stage.....our personal reality is unique on that stage.
There will never be a common reality, only a common physicality.