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The solar system is Planetary context in which planet Earth is located : a circle in which eight planets constantly revolve around one star, the Sun.
Of course, our system isn’t the only planetary system out there. Dynamic force systems around the gravitational pull of one or more stars exist throughout the galaxy and universe, so it is relatively safe to assume the existence of such innumerable systems.
Our solar system Is part of the local interstellar cloud , inside the local bubble of Orion’s arm, which lies about 28,000 light-years from the bright center of our galaxy, the Milky Way. It is estimated that it formed 4568 million years ago, as a result of the collapse of a molecular cloud, giving rise to a protoplanetary or stellar disk, that is, an unorganized group of material surrounding the Sun in the form of rings. From there the various planets and astronomical bodies were formed in our space.
Objects of the solar system remain, as in other planetary systems
in an elliptical orbit around the largest star, and therefore, with the greatest gravitational pull in the system. In our case, of course, the Sun is a G-type star with a total diameter of 1,392,000 km, which contains 99.86% of the total mass of the Solar System.
How is the solar system formed?
as said, At the heart of the solar system is the sun , a yellow dwarf star of V luminosity, and the only star in the cluster that emits its own light. Eight planets of different sizes and at different distances orbit around it, following elliptical paths as they go.
similarly, There is an abundant field of asteroids, in a belt after Mars and a much larger field yet Neptune . In addition, asteroids are found in the rings that surround large exoplanets such as Saturn And Uranus.
Natural satellites should also be mentioned, such as our moon, or the moons of Mars: Deimos and Phobos, which are abundant in the outer planets: Jupiter and Saturn have 63 and 61, respectively, while Neptune and Uranus have 27 and 13.
Finally, there are a series of trans-Neptunian objects, farthest from the Sun in the system, whose effect so little sunlight makes them difficult to study, but hypothetically would be three:
Kuiper belt. A tangle of celestial bodies orbiting away from the sun, and among them can generate short-lived comets that visit us from time to time. Pluto and its satellite, Charon, are the largest objects in this group.
scattered disk. A region of space that overlaps the Kuiper Belt and extends an unknown distance from the Sun. There will be an uncertain number of astronomical objects
It is estimated to be around 90.
Oort cloud. A globular cloud of celestial bodies, located approximately a light-year from the Sun, a hundred times farther from the Kuiper Belt. It is assumed that there will be between a hundred billion objects out there, which adds up to a total mass five times greater than that of the Earth.
Planets of the solar system
There are eight major planets in the solar system, divided into two groups:
- Inner planets. Closest and smallest to the Sun: Mercury, Venus, Earth and Mars. They are also called terrestrial or telescopic planets
Since it has a solid concrete surface, around it there is an atmosphere (except in the case of Mercury).
- The outer planets. It is after the asteroid belt in the middle of the planetary system, and is essentially giant and gaseous: Jupiter, Saturn, Neptune and Uranus. The latter two are known as frost giants.
There is, too A group of dwarf planets, including Pluto since 2006 : Ceres, Makemaki, Eris, and Haumea. They have enough mass to form a spherical shape, but not enough to attract or repel surrounding objects, so they are considered intermediate between planets and asteroids.
Recent studies suggest that there could be planet The ninth is called temporary Phattie
But nothing has been confirmed in this regard so far.