Why is Pluto no longer considered a planet?

https://science.howstuffworks.com/pluto-planet.htm

Reason Why Pluto it is no longer considered a planet:

Size: It is smaller than Earth's moon

Composition: It is dense and rocky, like terrestrial planets. However, its closest neighbors are the Jovian gas planets. For this reason, many scientists believe that Pluto originated elsewhere in space and was trapped in the sun's gravity. Some astronomers once theorized that Pluto used to be one of Neptune's moons.

Erratic Orbit: The orbit of Pluto is erratic. Pluto, orbits the sun at an angle of 17 degrees with respect to this plane. In addition, its orbit is exceptionally elliptical and crosses the orbit of Neptune.

Size of its moon: One of its moons, Charon, is about half the size of Pluto. Some astronomers have recommended that the two objects be treated as a binary system instead of a planet and a satellite.


Opinion: 

Pluto does not have to be a planet because of the characteristics in which it fails, especially because of its erratic orbit, since it crosses Neptune, another reason is because of its size since its moon is almost the same size.

Space Wheater

What is??

Space Weather is a term which has become accepted over the past few years to refer to a collection of physical processes, beginning at the Sun and ultimately affecting human activities on Earth and in space.

http://www.spaceweather.gc.ca/sbg-en.php

https://www.windows2universe.org/space_weather/sw_intro/what_is_sw.html

Weather At The Sun

The Sun emits energy, sometimes storms in the Sun release radiation and magnetic fields through the Solar System, sometimes passing through the earth and sometimes not.

Weather Around The Earth

When the radiation from the Sun reaches Earth, it runs into our planet's magnetic field and its atmosphere. The radiation and magnetic fields in space weather swirl around Earth. Earth is surrounded by the magnetosphere. It affects depending on what the storms from the Sun are like. But it also depends on how those storms flow around and through Earth's magnetosphere.

Changes In Space Weather

Like the climate on Earth, space weather is always changing. Some space weather storms form in minutes or hours. An "active region" in the Sun can last several days or weeks, which causes space storms during all that time. The sun has cycles; for example, the sunspot cycle of 11 years that brings storms.