What was the main idea of the science article by tyrone nielson

Im going to assume that the article you re referring to is ' How pluto stopped being a planet ' by Tyrone Nielson.

The main idea of the article is that a group of astronomers decided not to recognize pluto as part of our solar system by calling it a dwarf planet. But they do not call it that because of its size, but in order to be called a planet it has to follow three conditions, of which it does not fulfill the thrid one, which is that a planet must attract smaller objects to itself or pull them to its orbit or throw them into space but pluto moves with a field of rock and ice that can not be rid of. That s why the name of dwarf planet.

more than 1 person for sure

the secretary of state, appointed by the president with the advice and consent of the senate, is the president's chief foreign affairs adviser. the secretary carries out the president's foreign policies through the state department and the foreign service of the united states.