Why was Pluto reclassified from planet to dwarf planet?

Pluto has been a strange planet since it was discovered. It is very small, far away, half the mass of the moon, and does not adhere to the clean progress of the rock to the natural gas planet (internal rocky planet, giant planet of outer gas). Even before the 2006 official downgrade, there was an opposition to continuing to participate in the planet's lineup. Pluto defender says, "Yes, Pluto is a strange planet, but we have made it as a planet for a long time, and it is the ninth largest asteroid of the Sol system. Please do not use One of the points or its "moon" card is so big Pluto - the center of the card is located outside Pluto's lithosphere (this is basically when Pluto and Cathy are around each other It means that you are running around!)! "Pluto is still a planet - we all agree with that and there is no reason to downgrade it!"

Ellis is an asteroid larger than Pluto (although its radius is 23 kilometers smaller). It initially urged NASA to name it the tenth planet of the solar system. However, in the face of the reality of naming more and more planets, due to the discovery of more primitive Pluto-sized objects, the IAU or the International Astronomical Union has officially strongly defined the term planet for the first time It was done. The rules decided with a simple language are as follows.

- The planet must be pulled roughly spherically by gravity. This ensures that all planets are large enough to collapse into spheres

- The planet circulates the sun. It does not include satellites or other satellites. A planet orbiting around another star is called a planet, not a circle, it is called a rogue planet.

- Planet Paste "Remove all nearby garbage." This is a pluton of Pluto. It excludes planets that do not clear their orbits of dust or asteroids, Pluto, Ellis and other dwarfs usually do not

It is believed that there are thousands of asteroids circling around the sun, but the International Astronomical Union recognizes five: from the largest to the smallest planet they are Eris, Pluto, Hommia, Mark Mark and Ceres is.

So Pluto was driven to one of the thousands, far from its reputation as the ninth planet. Since the planet no longer exists, it always occupies a special place in our mind.

When Pluto was reclassified from planet to dwarf in 2006, the planet representing downgrade was widely indignant. Due to the renewal of the textbook, the Internet caused Pluto to experience a series of emotional memes from anger to solitude. However, as New Horizon's image release surface shows a very prominent heart-shaped feature, the sad Pluto meme wants the spacecraft to visit again, a very happy and loving way to Pluto I handed it over. Mickey 's loyal dog, Disney' s cartoon character Pluto debuted in 1930, and dragonfly discovered a dwarven planet in the same year. It has been speculated that Walt Disney named it to use its popularity for animated dogs with the name of a recently discovered planet, but other accounts are not sure if there is direct connection. However, whatever it is, as mentioned in the movie "Space Ball" by Mel Brooks in 1987, this is the joke that connects the two.

In 2006, Pluto was reclassified as a dwarf, and this change is widely considered a downgrade. Since then the planetary state problem of Pluto has caused controversy within the scientific community and the masses and caused controversy. In 2017, the science team (including members of the New Horizon n Mission) proposed a new aircraft definition based on "a circular object smaller than the star in the universe". This will increase the number of planets in the solar system from 8 to about 100.

You may recall that in 2006 Pluto was classified as a dwarf planet and the number of solar system planets was changed to eight. One of the reasons is that other small rock objects such as Pluto were discovered. The International Astronomical Union Association (IAU) is an organization responsible for naming planets and stars and setting planetary classification requirements, among others. The International Astronomical Union defines the planets of our solar system as celestial bodies.