why pluto removed from planetary world if it is there it harn us?

Answer 1

Relax there is no danger or risk that anyone or anything will be harmed. Pluto has just been re-designated a "dwarf" planet because the IAU (International Astronomical Union) took a vote for a new definition of what "Planet" means.

Unfortunately this seems to have been an arbitrary and pointless change, since they did not actually create a new systematic method for classification to replace the old definition. For centuries the word planet has meant simply "wanderer" and it was a poetic way astronomers used to describe the apparent motion of such objects, which did not remain in the strictly organized patterns of the constellations
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Now we have some added criterion to include but it's the kind of bureaucratic baffle-gab that a committee typical produces. It's not particularly scientific and doesn't really compare to even the classification system used for stars. Something like that would be far more useful since we are starting to discover planets may be pretty common in other star systems. Instead the IAU made a sort of "quick and dirty" fix which will likely have to be changed again some time in the future.
Here's the "new rules" for planets;

1) A planet is a celestial body that (a) has sufficient mass for its self-gravity to overcome rigid body forces so that it assumes a hydrostatic equilibrium (nearly round) shape, and (b) is in orbit around a star, and is neither a star nor a satellite of a planet.

(2) We distinguish between the eight classical planets discovered before 1900, which move in nearly circular orbits close to the ecliptic plane, and other planetary objects in orbit around the Sun. All of these other objects are smaller than Mercury. We recognize that Ceres is a planet by the above scientific definition. For historical reasons, one may choose to distinguish Ceres from the classical planets by referring to it as a “dwarf planet.”

(3) We recognize Pluto to be a planet by the above scientific definition, as are one or more recently discovered large Trans-Neptunian Objects. In contrast to the classical planets, these objects typically have highly inclined orbits with large eccentricities and orbital periods in excess of 200 years. We designate this category of planetary objects, of which Pluto is the prototype, as a new class that we call “plutons”.

(4) All non-planet objects orbiting the Sun shall be referred to collectively as “Small Solar System Bodies”.

It's pretty inadequate for a Scientific regulatory body to arbitrarily decide to fudge the definition to say certain objects "don't count" as planets rather than systematically and logically defining a way to proceed with an evolving body of knowledge in the future.

I wonder what the IAU will do if we actually develop telescopes that are powerful enough to resolve orbiting "objects" around other star that don't fit their highly sol system specific criterion. Currently the "classes" of planets are a set of descriptives that really do seem pretty slap dash:

* The planets inside the orbit of the earth are called the "Inferior Planets": Mercury and Venus.

* The planets outside the orbit of the earth are called the "Superior Planets": Mars, Jupiter, Saturn, Uranus, Neptune, and until recently Pluto.

* The planets inside the asteroid belt are termed the "Inner Planets" (or the Terrestrial Planets): Mercury, Venus, Earth, and Mars.

* The planets outside the asteroid belt are termed the "Outer Planets": Jupiter, Saturn, Uranus, Neptune, and until recently Pluto.

* The planets sharing the gaseous structure of Jupiter are termed the "Gas Giant (or Jovian) Planets": Jupiter, Saturn, Uranus, and Neptune.

* And now the new type "Plutons"

They could certainly have made a more logical set of classifications to structure the system, based on composition as with the gas giants or orbital characteristics or any other more 're-usable' descriptives that would designate any planet or 'celestial body that orbits a star' meaningfully as a member or instance of an actual -class- as the term is used in other natural sciences such as taxonomic studies.

Answer 2

Pluto is very small and its revolution aroud the earth is different from the other planets....and further it was the only known object in the Kuiper Belt,an enigmatic zone beyond Neptune that is teeming with comets and other planetary objects...it does not harm us but incase Pluto is accepted as planet then we've got to accept objects like Ceres, Charon and Xena too as Planets....why to load up the young ones yaar.

Answer 3

Pluto only lost its planetary status. It was not removed. It has to do with the physical properties it possesses.

Answer 4

Pluto does not have a same level regular orbit that other planets of solar system have. its size is similar or smaller to many other not accepted as planets having similar orbit. thats why either we accept them as planet making our solar system quite big or give pluto a simillar status like them. a not planet part of solar family.

Answer 5

Yeah, Took That Out And Added More LOL, Kinda Crazy I Think.

Answer 6

with growing techology we need to move with time..
lemme clear it out for u..
earlier anything in our space was called as planet..
but with discoveries made it was seen that evey thing in the solar system had differnt orientations and different properties..
so they reclassified planets as OBJECTS WHICH REVOLVE AROUND A STAR..
so this helped us categorise it..
but then there were many things which were revolving around a star..
like meteors and comets..
so they added a SPHERICAL SHAPE condition to definition of a planet..
then they redefined as.. WHICH REMOVES SUBSTANCE FROM THEIR ORBIT.. or in other words.. CLEAR THEIR ORBIT..
which is not done by PLUTO, XENA and 2 other stars whose name i dont remmeber..
one is CHERON i think..
so they categorised them as DWARF planets..

so its time we correct our science books and remember for the forthcoming quiz years that our solar system now has only 8 planets and some dwarf planets..

hope its helpful..
tc..

Answer 7

Silver should not be identified / classified as Gold. The scientists just re-grouped the celestial bodies

Answer 8

i think they were worried that pluto charon xena and sedna were going to invade the inner planets, and make them do their will. pluto has been caught crossing neptune's orbit for years now,,, it was just a matter of time. (the horror!)

Answer 9

I do no why have they removed....... Iam a scorpio and my planet is pluto hmmmmmmmmm.... if they have removed pluto then what will my star be my horoscope my future what will the astrologers say.............. Big confusion????????

Answer 10

it is removed because of the suspicions that pluto is in fact not a planet.