why the pluto has taken out uf planet?

Answer 1

Because the scientists realised that rather than being a planet, it was actually a cartoon dog.

Easy mistake to make.

Answer 2

The reason that Pluto was excluded is that it's just one Kuiper Belt Object (KBO) of many that we've now seen. Either there are eight planets or there are more (probably a lot more) than nine. Nine is not logical no matter what. It's not fair to favor Pluto over other KBOs, some of which are probably larger. And it's better to treat KBOs like asteroids, which are also not considered planets. That way we have eight well defined planets, thousands of asteroids, and thousands of KBOs, instead of trying to pick some special asteroids and some special KBOs out and call them planets. What could make them special, that people would not argue endlessly about?

Answer 3

the international astronomical union defined three terms "planet", "dwarf planet", and "small solar system body". this does not change anything about the solar system or pluto. it just corrects the mistake of classifying pluto as a planet initially


because pluto orbits the sun, is round, does not have an isolated orbit (a bunch of other similar bodies have similar orbits.), and is not a satellite it is a dwarf planet.

i have been waiting for this since i was about twelve. i feel somewhat satisfied. this was the right thing to do, believe me. i don't understand why so many are having such a problem with this.

(1) A "planet" is 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 neighborhood around its orbit.

(2) A "dwarf planet" is 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, (c) has not cleared the neighborhood around its orbit, and (d) is not a satellite.

(3) All other objects orbiting the Sun shall be referred to collectively as "small solar system bodies".


look here:
http://en.wikipedia.org/wiki/Kuiper_belt

also, if you want to spell the word "of" phonetically then it is spelled "uv".

Answer 4

No don't ask NASA, It was not their decision. It was a decision by the International Astronomical Union (IAU) meeting in Prague a fortnight ago,

What they decided was to define 3 categories of Solar System bodies

Planets
Dwarf Planets
Small Solar Systen Bodies (SSSBs)

Pluto was demoted from the first to the second category because it failed to meet the fourth of the the four criteria below:

The International Astronomical Union (IAU), the official scientific body for astronomical nomenclature, defines "planet" as a celestial body that:[1][2]

(a) is in orbit around a star or stellar remnants;
(b) has sufficient mass for its self-gravity to overcome rigid body forces so that it assumes a hydrostatic equilibrium (nearly round) shape;
(c) is not massive enough to initiate thermonuclear fusion of deuterium in its core; and,
(d) has cleared the neighbourhood around its orbit.

Our solar system is considered to have eight planets under this definition: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus and Neptune. Three bodies which fulfill the first three conditions but not the fourth are now classified as dwarf planets: Ceres, Pluto and 2003 UB313

Answer 5

There are new definitions for planets now. They are looking at Pluto differently now, and saying it is more like an astroid. Maybe it is not big enough or something.

Answer 6

I think for that you need to specifically ask NASA. Haiz! I think people there really got nothing to do. To be able to put in and take out Pluto from the 9 planets whenever they want to.. Haiz...

Answer 7

now that xena has ben discovered n its much of the same size of pluto then....if pluto has 2 stay...xena does 2.thats y they got shot of it.plutos orbits also above the orbits of other planets

Answer 8

This is according to the norms of InterNationalAstronomical Union of Scientists.

Answer 9

B'cause a bunch of idiots thought that they are given an opportunity to play GOD!!!!

Answer 10

ask NASA