An Overall View of the Planets in Our Solar System
The simple definition of planets in our solar system is defined as any object or a large celestial body that is deployed in the space and has mass. There have been many controversies regarding planets in our solar system because some say that there are actually eight planets while others say that the total number of planets in our solar system is nine.
In order to understand why this discussion started and where the difference lies, it is important to know the actual scientific definition of a planet. The definition of a planet is given by three points which are necessary for the body to be considered a planet. These are given as follows
- Firstly, the body should be orbiting around the sun
- After that, it should have a mass enough to maintain hydrostatic equilibrium which means it should be round in shape
- Lastly, it should also have cleared its neighbourhood that is around its orbit so that orbits don’t mingle in.
Therefore, this means that any object which is not orbiting around the Sun is not a planet, for example, the moon orbits the Earth and does not orbit the sun. The important factor to note is that it is because of one aspect of the second point due to which the difference in the number of planets of our solar system takes place as being eight or nine.
The mass is what makes the difference for a planet to be considered a dwarf planet or a planet. Looking at this theory, there are eight planets in our solar system which are given as follows
- Neptune (likely controversial to be a dwarf planet because of orbit space)
- Pluto (controversial to be a dwarf planet due to its mass)
It is because of the mass that Pluto is considered as a small (dwarf) planet and often not included in the planets of our solar system so children are mostly taught eight planets in our solar system today as compared to the past two decades of children.
Neptune is also being considered as a dwarf planet because of the fact that it has an object like Pluto that keeps wandering in its orbit space and it is not the dominant body in the area. Pluto orbits the Sun twice for every three orbits of Neptune which is why many astrologists believe Neptune to be a dwarf planet of our solar system too.
There are even other planets around, as Pluto is also placed in the asteroid belt that contains Haumea, Eris and Makemake as very small bodies too, while there are a few others as well. Hence, these make the dwarf planets list to comprise of the following
Hence, according to today’s world, there are many planets in space, however, for us, there are 8 main planets in our solar system and if you are counting pluto, pluto would have been the 9th planet. As we know it got downgraded to a dwarf planet.