The story of a planet

The planet Earth, on which we live, dates back to four and a half billion years ago, when huge, ancient stars exploded. The stellar explosions melted the chemical elements known now, including iron, carbon, and gold, and radioactive elements such as uranium. Over time, gravity took control of the situation and this mass of star dust collapsed in on itself to form a massive rotating disk, or what is called a solar nebula cloud.In the center of this disk, the temperature rose, the pressure increased, and a star was born, which is the planet Earth. Fifty years after the birth of the Earth, the moon appeared, as it began in an orbit closer to the Earth and began to appear in the sky many times, many times, its size now. The author of this book imagines himself (Sinbad) roaming around the planet Earth, probing its depths and delving into its depths in order to reveal to us the history of our wonderful planet on which we live and about which we know so little.