We know by the solar system that formation of celestial bodies that revolve around the star known as the Sun. Within this solar system is planet Earth, the only one of which presents optimal conditions for the existence of life. The solar system is, for now, the only one of all the solar systems known to man that possesses life.
Although the understanding and interpretation that the human being made of the way in which the solar system worked was not always the same (in ancient times it used to be believed that the Sun revolved around the Earth), today there is no doubt that the center of gravity of this solar system is precisely the Sun, around which the planets Mercury, Venus, Earth, Mars, Jupiter (the largest of all), Saturn (the one with the largest rings around its circumference) orbit , Uranus, Neptune and Pluto. Beside these planets we find other bodies such as moons or natural satellites, asteroids, dwarf planets and others.
Obviously, the center of the solar system is none other than the star known as the Sun. This star, which occupies almost the entire mass of the solar system, has a mass composed of 75 percent hydrogen, 20 percent hydrogen. one hundred helium and five percent other elements.
The differences between the planets that are part of the solar system are very noticeable in several respects. In this sense, if we assume that the diameter of planet Earth is 1, that of Jupiter will be eleven times greater, that of Saturn 9.46 times greater and that of other minor planets will be 0.382 (Mercury) or 0.53 (Mars). While the orbital period of a terrestrial year represents for planets like Jupiter more than eleven years, for Saturn more than 29 and for Neptune 164 years (this having to do with the distance of each planet from the Sun and therefore with the presence of larger and larger orbits the further away from it), the rotation period of an Earth day represents 1.03 for Mars, 58.6 for Mercury, and 243 for Venus, to name a few.
