The manual is a brief biography of the visible matter, which was considered
eternal and static until less than a century ago, but the advance of the current
scientific knowledge has enabled to develop a coherent narrative about its
origin and evolutionary transformations.
The narrative begins with the birth of visible matter around 14 billion years
ago, after what is known as the Big Bang, a huge flash that originated the
universe. The matter formed was composed just by the nuclei of the two
smallest atoms, hydrogen and helium.
As the pair of atoms was sterile – chemically speaking – started a long period of
infancy, in which the pair of new-born atoms gave rise to gaseous clouds that
began to form the first stars, authentic factories where the hundred existing
chemical elements were manufactured.
After a few billion years, the stars began to end up their fuel, fading and
disintegrating, seeding space with their precious cargo of new atoms, the so-
called “stardust”. The new atoms formed in the stars began to form chemical
compounds, in such a way that the already fertile matter entered in its
adolescent phase.
Around 4.5 billion years ago, the gaseous clouds in a corner of the Milky Way
galaxy formed a star – the Sun -, with a few planets revolving around. On one of
them, the Earth, a few chemical compounds basically made up of atoms of four
chemical elements (carbon, hydrogen, oxygen and nitrogen), started to evolve
over hundreds of millions of years, through processes of chemical nature. Once
the planet was transformed in a world of highly complex chemical molecules
of inert nature, a singular group of complex molecules rebelled against its fate
(the thermodynamic equilibrium, with the cessation of its activities). On the
contrary, the rebel chemical molecular system self-organised its activities,
transforming into a biological system, which was the first living organism. With
the emergence of life began the adult phase of the visible matter.
The first consolidated living being on Earth, an imaginary creature smaller than a
bacterium, is supposed to have been the common ancestor of all living beings,
our umpteensquillionth-great-great-grandfather. By biological evolution over 4
billion years, all species on Earth, including humans, have emerged.