All of us on occasion have asked ourselves the question of when planet Earth was born and when life arose on it. According to the most recent studies, the origin of the Earth dates back to 4,500 million years, while life on our planet dates back 4,000 million years. As is logical, during all this time it has undergone drastic transformations that have shaped the Earth until today. When and how was the Earth born? Specifically, the Earth is 4.47 billion years old. It is the most widely accepted theory today by the scientific community. The person who made this measurement was John Rudge of the Department of Earth Sciences at the University of Cambridge. To carry out the study, he took as a basis the decay of hafnium 182 in tungsten 182, and made use of different radiometric dating techniques of the remains of the first meteorites that reached planet Earth. Of the solar system. At first there were only rotating rocks, clouds of gas, and dust. The protoplanetary disk that would later become the Earth was created by space forces. Gravity began to unite the matter that was floating in rings, which were colliding with each other and forming masses of greater size. Scientists also believe that the Moon was formed in this way: it collided with the Earth and was trapped in its gravity indefinitely. How did the first continents arise? Originally, planet Earth was made up of a gigantic mass of water. The earth’s surface was born in the Archaic period by the flow of heat that gushes out from within. The crust was very unstable, and asteroid and meteor collisions occurred.At the end of the Paleozoic and the beginning of the Mesozoic the different land masses united into a supercontinent called Pangea. It fractured 200 million years ago, and the continents were separated until reaching the position with which we know them today. Today there are considered six continents: America, Europe, Africa, Asia, Oceania and Antarctica. Now, some scientists believe that there are actually seven since the continent of Zealand has been discovered, which is almost submerged after it separated from Antarctica between 130 and 185 million years ago, and from Asia between 60 and 85 million years.
