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How the planet Earth appeared

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How the planet Earth appeared</a>

About 4.54 billion years ago, our planet was formed.

Scientists can not describe the process of its formation with 100% accuracy, but the modern generally accepted theory of its birth has numerous scientific confirmations.

Instructions

    1

The emergence of our planet itselfIs associated with the formation of the solar system. Billions of years ago, instead of our native planetary system in space, there was an incredible molecular cloud. At some point, a small part of it separated, and a protosolar nebula formed. Under the influence of gravitational forces, the nebula began to contract. After most of the matter accumulated in the center, the remaining matter began to spin faster and faster around it. The nucleus of the nebula was shrinking more and more, as a result, a thermonuclear reaction began in its bowels - the Sun appeared.

    2

In a cloud of steel rotating around a new starTo appear local centers of attraction, and as a result of a process called accretion, that is, falling onto larger celestial bodies of smaller ones, planetary earths - protoplanets were formed. The planetesimals were much larger than the planets at the present time.

    3

The planetesimals encountered each other andAttracted the remains of matter from the gas-dust cloud. As a result, all planets known to us were formed, including the Earth, as well as satellites of the planets. Remains of the substance, which did not fall into the field of gravity of the planets, were removed by the solar wind, which emanated from other newly formed stars.

    4

Initially, the earth was hot, thanks to thisIt could absorb all new and new material from the surrounding space and increase in size. Also, due to the fact that the substance was in the molten state, the denser metals went into the interior of the planet, and the lighter silicates rose outward, that is, the core and crust of the Earth formed. At the same time, the first atmosphere of hydrogen and helium appeared. The initial process of forming the planet took only a few tens of millions of years.

    5

Another eight hundred million years have passed, and on the cooled Earth appeared the first living organisms, which radically influenced the further development of the planet.

How the planet Earth appeared Was last modified: May 23rd, 2017 By Zuovaexx
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