In 2006, the International Astronomical Union (IAU) redefined the major planets in the solar system, resulting in Pluto being excluded from the nine planets in the solar system
Recently, astronomers have pointed out that Pluto is the ninth planet in the solar system because it operates in a special area of the solar system, the Kuiper Belt, and it has proved to be the second most complex, most interesting and more dynamic object in the solar system than Mars
Pluto, which is located in the outer circle of the solar system, is very dim and is even smaller than the moon.