The big bang in the beginning of our universe.
Think about it:
Our lives are basically composed by cosmic vibration.
Be that the many frequencies of cosmic waves from far way or simply the light of our Sun.
Some of these vibrations are used for the evolution of life on earth, like when the plants make photosynthesis, or when water evaporates, then condenses and makes the rivers and the animals drink this water effectively absorbing that energy that made the water evaporates in the first place.
To make it simple:
Just like plants take the energy of the sun to produce energy, our bodies can create mental activity with cosmic energy (Sun; sun reflected on the moon; other planets; other galaxies; etc…)
This means that our bodies act like an antenna synchronizing to certain external interferences.