The Big Bang theory describes a constantly evolving Universe, not just a starting point. Modern, scientific cosmology can be viewed as an awe-inspiring narrative. It gives us a guided tour of the evoulution of our present-day Universe. From there, we can pinpoint the Earth evolving from the ethereal to the material. We see the human race emerging.
Culture emerges from our awareness.
This culture guides us to present day, allowing us to derive the narrative which has just been told. It makes available to us a wider reality to which we belong. It models the universe as a single, meaningful whole. It's step by step evolution leads to human rootedness. As it induces wonder and awe, it also stimulates gratitude.