why isnt pluto a planet anymore???

Answer 1

The IAU members gathered at the 2006 General Assembly agreed that a "planet" is defined as a celestial body that (a) is in orbit around the Sun, (b) has sufficient mass for its self-gravity to overcome rigid body forces so that it assumes a hydrostatic equilibrium (nearly round) shape, and (c) has cleared the neighbourhood around its orbit.

This means that the Solar System consists of eight "planets" Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus and Neptune. A new distinct class of objects called "dwarf planets" was also decided. It was agreed that "planets" and "dwarf planets" are two distinct classes of objects. The first members of the "dwarf planet" category are Ceres, Pluto and 2003 UB313 (temporary name). More "dwarf planets" are expected to be announced by the IAU in the coming months and years.

Aloha

Answer 2

Because scientists discovered it is either a mere moon or astoriod, and thus could not be called a planet, and with two more planets in the solar system, it's pretty much too far from the sun to be counted as part of our solar system.

Answer 3

Actually they are keeping it a planet. There is also a possibility that there is another planet past Pluto.

Answer 4

because the scientists found other 'planets' that were larger than Pluto. soo, they figured that they could either take out pluto or put in 50 new planets. but i think that it's wrong to take away the planet because it's been one for soo long, it will mess up people's little arcronyms. too badd so sad.

Answer 5

Pluto is not a planet because it is smaller than earth.

Answer 6

because of the fact "back on your day" (and interior the day of all of us over 5 years of age) we did no longer recognize almost as plenty concerning to the image voltaic device as we do now. as quickly as all of us started getting to correctly known plenty extra products accessible we found out that a sparkling definition of "planet" had to be arise with or we would basically save looking further and extra "planets" and at last each baby in third grade may well be memorizing the names of a dozen or extra balls of rock and ice that basically take place to orbit the sunlight. back on your day we additionally concept Pluto had a million moon, Charon. all of us recognize recognize that Pluto orbits a evaluate area outdoors of itself and that Charon, Nix, and Hydra (we did no longer even recognize Nix and Hydra existed back then) orbit it besides alongside with a set of different Kuiper belt junk. We additionally recognize that there is a set of junk orbiting the sunlight interior the comparable section as Pluto. the actuality that Pluto is no longer a planet has no longer something to do with its length, it truly is a uncomplicated false impression. It has to do many times with the actuality that it has no longer cleared its orbit of different junk orbiting interior the comparable section, due many times to its vulnerable gravity. If we nonetheless seen Pluto a planet we would additionally might desire to evaluate Eris, Makemake, Sedna, Orcus and a set of different Kuiper belt products planets, and we would additionally might desire to evaluate Ceres, interior the asteroid belt, a planet. So we would certainly have 13 planets a minimum of genuine there with who is conscious what number extra to be found. once you learn the attributes of those products with the 8 genuine planets it is going to become obtrusive that none of them, Pluto lined, might desire to be categorized which incorporate the planets.

Answer 7

cause scientist got excited way back when and called it a planet when in reality they didn't have a clue what the were talking about

Its a just rock

Answer 8

Sorry I am 52 years old and I not taking it off my list of planets.

Answer 9

since when it's declared not a planet? I've been kept in the dark in the refrigerator...

Answer 10

B/c they left the name for mickey to name his next dog.