If planets have gangs, Pluto, which was invited before, is suddenly expelled. Since 2006, Pluto's status as a planet has been removed! So, how many planets are there in the Solar System, the answer is eight. Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus and Neptune.
Launch PopSci, Thursday (2/2/2023) The International Astronomical Union (IAU) has also changed Pluto's status to a dwarf planet. Because apparently, if the classification of Pluto is considered a planet, then the IAU must label the hundreds of objects they find later on. Finally, the IAU chose to remove Pluto from the list of planets in the Solar System.
To become a planet, it is known that there are three criteria that must be met. First, the planet must orbit the Sun, second, the planet must be approximately spherical in shape, and third, its orbit must be clear of other objects.
The first criterion, Pluto passes because it orbits the Sun every 248 Earth years. Second qualification, still safe. Third, Pluto appears to have failed to meet this requirement. The orbits of the other eight planets in the Solar System are clear of other objects. However, Pluto is different. If you look at the Solar System as a whole, it is located between the asteroids and planets. In short, it has no free orbit.
Rather than being the farthest planet in the Solar System, Pluto also seems to fit better into the closest gang of the Kuiper Belt, a donut-shaped ring that may consist of a trillion comets and ice balls orbiting outside Neptune. At least, there are 200 objects there that are quite large and fill the dwarf planet.
So, if you are asked how many planets are in the Solar System, don't get it wrong. Pluto has now moved gangs.