After the emergence of matter, space and time or, better expressed, of spacetime, from an abrupt manifestation known as Big Bang, antimatter also appears and the first atoms arise. The initial atom, the first properly material or tangible existing component, was hydrogen and, later, the helium atom. From these two initial atoms, by very complex interactions at enormous temperatures and immense pressures, more and more complex atoms are formed.
The atoms thus formed over hundreds or millions of years, are coupled and joined together in structures even more difficult to form, as are the so-called molecules, at first the simplest but, with the passing of centuries and millennia, the most diverse and complicated molecules begin to appear.
It is then that, 4,500 million years ago, on a very small planet of a small and common galaxy, molecular conglomerates of an inconceivable complexity begin to agglomerate and here, on our planet, begins what is known as prebiotic chemistry, the chemistry that precedes life. This gives rise to the emergence in the universe of molecular entities that can serve as the basis and foundation for the emergence of a new way of existence, what we call Life.
But, however convoluted and complicated these molecules were, they were still inert matter.
Something happened that generated a gigantic, mysterious and unexpected change. From these molecular groupings, living systems were formed, that is, for the first time in the universe (as far as we know), life made its appearance. It is this unexplained and inconceivable event, which in our worldview we call the SECOND SINGULARITY.