FunWhat are the theories and hypotheses about the origin...

What are the theories and hypotheses about the origin of the Earth

What are the theories and hypotheses about the origin of the Earth? Even today, scientists cannot say precisely how long ago the first life forms appeared on Earth, but it is likely that they arose spontaneously from the various chemicals found in early oceans. Certainly, however, there is a close relationship between the formation of these first life forms and the environmental conditions present on Earth billions of years ago. What are the theories and hypotheses about the origin of the Earth According to modern theories, our Universe began with a great explosion, the Big Bang. It is believed that, before this event, all the energy and all the matter of the present Universe were compressed into an infinitely small point; This energy was released with the Big Bang, as a result of which all the particles of matter began to form and rapidly move away from each other. Immediately after the explosion, which would have occurred about 13.7 billion years ago, the temperature it was around 100,000 million degrees Celsius (° C). Matter was present in the form of positively charged particles, called uncharged protons or neutrons; Due to the high energy, these particles collided with each other, aggregating and thus forming what would become the first atomic nuclei. Later, when the Universe reached a temperature of about 2500 ° C, the protons present in the nuclei began to attract small negatively charged particles, called electrons, which made the formation of the first atoms possible.From these atoms, over time, all the planets and stars in our Universe, including the Earth and the Sun, have originated. Nebular Theory The formation of the Earth from the Big Bang and the origin of the Universe, seems to be one of the most accepted theories but it is not the only one. There is also the so-called nebular or planetesimal theory that was elaborated by Inmanuel Kant and Simon Laplace (who was the first to elaborate this theory). According to this theory, from the explosion of a Supernova, the Solar System arose. The Supernova particles formed a large disk after exploding in the center of which the sun was formed. Inside the disk there were collisions and mergers of particles known as planetths, which generated the creation of large rocks, which ended up becoming the planets, satellites and meteorites of the Solar System. This happened 4.5 billion years ago. Laplace Theory As we mentioned, before Kant’s theory, there was that of the French astronomer and mathematician Pierre Simon Laplace, who in 1776 made known his theory about the origin of the Sun and the planets from a great nebula. According to the theory the formation of the Solar System arises from the condensation of a rotating nebula that due to its own gravity became a disk with a central nucleus. Upon reaching a higher rotation speed, the nebula became unstable, generating a series of concentric rings in its more superficial layers than when they separated, gave rise to the origin of the planets and satellites, while in the center of the nebula the Sun was formed, around which all the planets revolved. .Accretion theory Finally, we want to talk about the accretion theory developed in 1944 by the Russian geophysicist Otto Schmidl, which is based on the origin of the planets and the Solar System as a result of the accumulation of cosmic dust. Earth was created about 4.6 billion years ago from a process of accretion of cosmic materials. After stratifying into a core, mantle and crust through the process of accretion, it was massively bombarded by meteorites and asteroid debris, increasing the internal heat of the Earth and melting cosmic dust causing the eruption of volcanoes and other many processes that gave rise to the oceans, the primordial atmosphere and life on Earth.

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