Question

Why pluto is not in the solar system?????


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Answer 1

Its size is getting smaller with time,so small that it can't be considered a planet.

That's why it has been 'excluded' from our solar system.

Answer 2

Pluto, a former planet of the contemporary solar system , in near 2000 was discovered to be part of the dwarf planet systems due to it's particular land and particularly according to the characteristics defined by Higgs, the Genevian scientist postulated some mandatory rules for any celestial body to be called a planet.

Thus, later NASA announced Pluto as not a part of the contemporary solar system from then on.