will someone can explain why planet pluto is not a memeber anymore of our solar system?

Answer 1

It isn't really a planet as it is so small. We've got another one now so Pluto isn't needed or wanted anymore. Sort of a parody of life isn't it?

Answer 2

Pluto, the last planet to join the heavenly pantheon, became the first to leave it. The status of Pluto had been under discussion for some time, but with the discovery of 2003 UB313, nicknamed Xena, the question became acute, for it seemingly had as much right as Pluto to be called a planet.

On August 24, 2006, the International Astronomical Union surprised the world by voting in a new definition of planet, one that would exclude Pluto and bring the total number down to eight. (There had previously been been strong speculation that the redefinition would bring the total up to 12 instead of down.)

Pluto was instead classified as a dwarf planet, along with Ceres and the aforementioned Xena. The main difference between a dwarf planet and the real thing is that the dwarf variety has not cleared the area of its orbital path.

This redefinition met with a wave of protests from those who wanted to see the ninth planet grandfathered in, including but not limited to supporters of the late Clyde Tombaugh, who discovered Pluto in 1930. His widow, however, said he would have been accepting of the IAU's decision since "he was a scientist" and understood that astronomers had to take into account newly discovered objects in the Kuiper Belt (where Pluto is located).

But opponents of Pluto's demotion remain unconsoled and have generated a thriving industry in T-shirts, mugs and other memorabilia. Among the many slogans of this movement was one which played on the mnemonic for the names of the erstwhile nine:

Answer 3

Reasons given by Harvard University's Smithsonian Astrophysical group (Brain Marsden,Dan Green,Gareth Williams) for categorizing Pluto as an asteroid (I'm just pointing out the major reasons) :

(1)Pluto is smaller than 7 moons in the solar system.

(2)Pluto is unlike the other planets in that it has an icy surface instead of a rocky surface like the inner 4 (terrestrial) planets, or a deep atmosphere like the next 4 (gas giant) planets.

(3)Previously (in 1999), Pluto was claimed to be TNO(Trans-Neptunian Object).Later Marsden said that "Pluto has more in common with comets than it does with planets" in Atlantic Monthly.Some scienists say it's among Kuiper Belt Objects [KBO's are small bodies which orbit the Sun beyond Neptune's orbit].

(4)Recently(Aug.2006),Internat... Astronomical Union (IAU) voted this month to redefine a planet.There is both a size limit & a requirement that the object sweep out its orbit. In addition the object must independently orbit the Sun (excluding several large moons of Jupiter). This new classification redefines Pluto as a "dwarf planet", leaving the Solar System with 8 "classical planets". New additions to the dwarf planet class are Sedna, the largest asteroid, Ceres and "Xena".

Answer 4

Pluto is part of an asteroid belt. This was discovered several years ago, If I remember correctly I think there are about 130 000 rocks in the belt. Therefore technically it is not a planet, but a very large asteroid.

Answer 5

The astronogists re-define the Pluto simply they have no clues at all about Pluto all this while. If they still recognise it as a planet, then it is their job and interest to explore the planet, right?

Answer 6

Technology finally,with the help of the Hubble orbiting telescope now realizes pluto only qualifies as an astroid-planetoid; too small for a planet.

Answer 7

Because of the stupid committee that said Pluto couldn't be a planet anymore.

Answer 8

Pluto will stay as the dwarf planet because it has failed to qualify for full planet status because:

It has not cleared of its orbits of other objects.

Pluto was automatically disqualified because its highly elliptical orbit overlaps with that of Neptune. It will now join a new category of dwarf planets.

Answer 9

LOL!! next you would be telling us that astrology is faulty because of the fact the Earth isn't the middle of the universe. It amazes me whilst human beings declare an interest in astrology yet fail to nicely known it quite is maximum undemanding premise. Astrology is a language of symbols. mutually with as quickly as we are saying Mercury is retrograde. Mercury isn't actual shifting backwards. It in basic terms seems to be and is symbolic on the point of the psyche. Pluto is an considerable area of our psyche and consistently would be no count what absolutely everyone in a junior severe technology classification says. If something Pluto's declassification symbolizes a denial of those areas human beings that are ruled by utilising Pluto. it quite is an exciting preamble to Pluto entering into Capricorn the place it quite is going to truly shake up society commonly. It pertains to Jung's concept of the Shadow. What we deny approximately ourselves will reek havok in our lives. Did I lose you? So sorry. possibly you will get considered one of your instructor to describe it for you. smile

Answer 10

Because someone, some committee somewhere, with not too much to do, decided that it was too small. However, many do not agree with that committee and still consider it a planet. The REAL question is, what difference does it make?