Studying space is always a passion and great pleasure for many, as they try to know what is going on in outer space and around planet Earth, and to know the most important secrets about these space objects, and because the planets of the solar system are considered the most prominent of these objects, the question has increased about the number of these planets and their arrangement in terms of their proximity to the sun. ; Therefore, it is possible to indicate the number of solar planets and the arrangement of these planets in terms of their degree of proximity to the sun, in addition to indicating which of the planets of the solar system is closest to us on Earth.
Planet Earth and the solar system
Despite its large and enormous size Planet EarthHowever, it represents only a very small point in the vast space that God created and shaped, and there are many celestial bodies that revolve around the Earth, and if a person raises his gaze to the sky, he can see and recognize some of them, and perhaps it is one of the most prominent celestial bodies that a person sees through his presence. On planet Earth there are the sun, the moon, and a number of stars, and with the vastness of this universe and outer space, man’s passion for knowing the number of solar planets that exist in space has increased, and planet Earth is considered one of them.
In the context of clarifying the number of solar planets, it can be noted that the solar system consists of the sun, which is a star that radiates heat and energy, and the planets and their satellites, in addition to comets and asteroids. The sun is considered the largest body in the solar system, and it is also the center of the solar system and around it the rest of the planets revolve in their orbits. Fixed.
How many planets are there in the sun?
According to the British website Britannica, it is Number of solar planets 8 planets, all of which revolve around the sun in fixed orbits:
1- Land.
2- Mars.
3- Mercury.
4- Al-Zahra.
5- Jupiter.
6- Saturn.
7- Neptune.
8- Uranus.
Is Pluto among the planets of the solar system?
Although some people make a mistake in determining the number of solar planets, and think that it is 9 planets; He believes that Pluto is among the solar planets, but this is a wrong belief. The International Astronomical Union added an additional standard for describing planets in 2006, which stipulated that a celestial body is considered a planet if it orbits a star or the remains of a star, is round or nearly round, and has strong gravity, but is not so massive that thermonuclear fusion occurs. What is meant is With strong gravity, the planet is the largest body in its orbit, and it cleans the area near it from any other large bodies, which is not the case with “Pluto.” So it was considered a “dwarf planet.”
Arrangement of the planets according to their degree of proximity to the sun
After indicating the number of solar planets, the arrangement of the planets of the solar system in terms of their degree of proximity to the sun can be clarified as follows:
1- Mercury.
2- The flower.
3- Land.
4- Mars.
5- Buyer.
6- Saturn.
7- Uranus.
8- Neptune.
The closest planets in the solar system to Earth
Despite the common belief that the planet “Venus” is the closest planet in the solar system to the planet “Earth,” or as it is said, it is “Earth’s twin,” but this is a wrong belief. As the closest to the planet “Earth” is Planet “Mercury”.
The closest exoplanet to Earth
Aside from the planets of the solar system, which are (Mercury – Venus – Earth – Mars – Jupiter – Saturn – Uranus – Neptune), there is another group of “exoplanets”, which is a term given to distant worlds that are observed outside our solar system, and it is considered a planet. “Proxima Centauri b” is the closest exoplanet known to us.
According to the Russia Today channel, the planet “Proxima Centauri b” is only four light-years away from Earth, and it orbits an “M” star in the “Centaur” constellation. Its mass is estimated at 1.27 Earth’s masses, and it takes 11.2 days. To complete one orbit around its star, Proxima Centauri.
Planet “Proxima Centauri b”
Although the planet “Proxima Centauri b” sits in the habitable zone of its star “Proxima Centauri”, the conditions on it are harsh. NASA announced that the planet Proxima Centauri b experiences bouts of intense ultraviolet radiation hundreds of times what the Earth is exposed to from the Sun, and that this radiation generates enough energy to strip away lighter molecules such as hydrogen as well as heavy elements such as oxygen and nitrogen.
