Does any one know why and who kicked pluto out ?

Answer 1

Pluto was found to just be one of the larger objects in the Kupier Belt. With the discovery of many similarly-sized objects and one that's even bigger (Eris), Pluto was grouped among them and got its status degraded to a dwarf planet.

Unlike the other planets, Pluto has a very eccentric orbit and is very small compared to the gas giants that precede it. It has always been regarded as unusual, but with the discovery of other similar objects, it was no longer justifiable to consider Pluto as just an odd planet.

Answer 2

Gawrsh! Goofy wanted the job.

When Pluto was first discovered it was thought by some to be bigger than the Earth. Since then better measurements have shown it to be much, much smaller. Recently more objects about the same size have been found. They were really too small to be called planets but since they were around the same size as Pluto, either they had to be called planets or Pluto had to be demoted to be consistent. At the recent meeting of the International Astronomical Union the non-unanimous vote was that it was no longer to be called a planet.

Scientists reclassify things all the time as better information comes in. Usually they reclassify bacteria, plants or sometimes animals or rocks. This almost never makes the news even though it is more likely to be important to us because these things are here on Earth. Pluto is a very long way away and as recently as 1929 nobody even knew it was there.

The only people who have a right to have an opinion on this are those with detailed knowledge of the solar system and astronomical classification schemes. What anybody else thinks actually does not count.

Answer 3

The International Astronomical Union

First, pluto is not like any of the other planets in size or function. Many scientist called it a double planet because it doesn't have a specific orbital spin (as on an axis) on an orbit. Pluto does this, it rotates around a center of gravity with it moon Cherin. The center of orbit gravity is between pluto and cherin. It would be like the earth and the moon rotating around a center of gravity half way between the two.

Second, Pluto is made of Ice and Dust, which would make it very similar to the other larger objects located in the Kieper Belt some 100 million miles farther out from pluto.

Third and finally; Pluto acts (Gravity and composition) much in the same manner as a comet when heated, giving and taking on mater of ice and particles as it travels through space

Answer 4

It was delete Pluto or add two more secondary planets. After careful research, scientists found Pluto didn't quite fit up to the standards of a planet. National Geographic did a very good story, layout, and explanation of this in December or January.

Answer 5

Who? The International Astronomical Union.
Why? Too small, too big of a moon, didn't clear it's own orbit. Adios, Pluto.

Answer 6

It appears to be only a very large member of the kyber belt objects.

Answer 7

A bunch of European Scientists did it for publicity, after they and been drinking all night some conference.

Face it dwarf planet or planet, it has THREE moons and it's a PLANET!

Answer 8

i really wish they hadnt done that
now all the science projects ive done about pluto have gone for naught... :(

Answer 9

I think it was because it did not meet the definition of "planet"
something about moons and rotation. Scientists agreed it has to be demoted :-(

Answer 10

Basically, scientists believe it is a moon or part of neptune and so it just revolves there. It is not considered a planet.