Why pulto is out of the solar system?

Answer 1

Pluto is not outside the Solar System, but it is not considered as a planet anymore because the size of Pluto is so small, the scientists at NASA decided to call it a dwarf planet.

Answer 2

There is no astronomical body known as "pulto" that has been identified as being part of our solar system. It is possible that you are referring to a fictional or unofficial term. If you can provide more context or clarify your question, I may be able to provide a more accurate response.