Why is there 8 planets?

Answer 1

In 2006 the international astronomical union changed the definition of what a planet was. This meant that Pluto no longer met the definition of what a classic planet was and it was demoted to a dwarf planet status instead.

Answer 2

The International Astronomical Union (IAU) recognises 8 Planets in our solar system, and 5 Dwarf Planets (including Pluto). There are several other dwarf planet candidates in addition to these.

Answer 3

There are 8 planets in our solar system because of the way they formed from the leftover material in the early solar system. Through a process called accretion, small particles clumped together to form larger bodies, eventually leading to the formation of the planets we see today. This process resulted in 8 major planets orbiting the Sun.

Answer 4

There are now 8 planets in our solar system. A number of other planets exist that orbit other stars.

there are 7, Pluto is considered a dwarf planet