Planet Earth belongs to the group of so-called inner, rocky or minor planets. It is number three of the solar system, in relation to its proximity to the solar star, specifically at a distance of approximately 150 million km, a figure that is equivalent to an astronomical unit. It is located in between the orbits of the planets Venus and Mars.It is estimated according to scientific arguments that the Earth has an age of about 4600 million years. In the early stages of its formation (from the nebula that gave rise to the solar system), it was a larger body, made up of hydrogen, helium, methane, ammonia molecules, but after a period of contraction and increase from the surface temperature (up to 3000 ° C), there was an escape of many elements of the primitive atmosphere, which led to the remaining components being combined with each other.
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