pluto a planet or not???????

Question

IS PLUTO A PLANET OR NOT, I HOPE IT STILL IS I LOVE PLUTO MY FAVORITE PLANET! IF NOT WHY ISN'T IT A PLANET. IF IT IS NOT A PLANET HOW COME THEY DECIDE ITS NOT NOW IF SO WILL THEY CHANGE ALL OF THE BOOKS AND STUFF THAT IS PUBLISHED. THEY SHOULD DEFINATELLY KEEP IT A PLANET. (JUST relized my cap lock was on and I don't feel like retyping this sorry) Thanks for all the help! :)

Answer 1

Officialy speaking, no it's not. But honestly, it doesn't matter.

They aren't going to be rewriting text books about it and if you're lucky your science teacher might even mention it.

The Moon is in orbit around the Earth, not the sun, so it can't be concidered a planet. Even though it's bigger than Pluto.

Pluto was decided not to be a planet because of it's size and irregular orbit. If Pluto is a planet, what makes other large objects in the system that are orbiting the Sun not planets?

Someone at the same confrence suggested a rule that would have made Pluto along with five other bodies in the solar system all concidered planets. But the decision was made to rule Pluto out and go with eight planets instead of 14.

In reality, a place that is sometimes foregin to scientists, it doesn't matter. Pluto is still pluto, it still has a moon, it's still tiny and it's still way the f*** out there. Just call it a planet and if anyone makes any remarks just tell them I say they're losers.

Also, that Darker_Side guy is completely incorrect. The Hubbel has taken pictures of Pluto and it's moon. They're grainy and you can't make any detailed features out, but there's deffinetly a planet-like body there.

He's probably thinking of 'Planet X' , which was a planet they expected to find because of the way the outer planets orbit, they figured something had to be exerting gravity on them, but it just turned out they were miscalculating. Pluto was found AS they were searching for 'Planet X', but it was too small and too far out to exert the gravitational field they needed to make sense of the calculations.

Answer 2

it's now a dwarf planet, along with two others, one behind pluto, and one in the astroid belt. I did love pluto, but they found the one in the astroid belt, and it was bigger, so they didn't know what they were gonna do. They didn't have an exact definition of a planet, so they kept broadening it to include pluto, but it didn't work, so now it's a dwarf planet. Pluto is still included, have you heard of the New Horizons mission? They're going to send a rocket around pluto & back to examine the surface on Pluto and the dwarf planet near it. About a week or so ago they first saw pluto, it was a tiny speck. It's supposed to take about 9 years or so, so if you have time, I'd stick around :)

Answer 3

No it is not a planet anymore. Keep in mind that emotions should not affect what we define in science. Just because we love and want Pluto to stay as a planet doesn't mean it is right to keep it that way. One of the reasons Pluto is not a planet anymore is because it crossed the orbit path of another planet. Under new planet definition rules, Pluto does not fit the requirements.

Answer 4

The International Astronomical Union decided that Pluto was no longer a planet. The reason is that while Pluto is round, orbits the sun, and has three moons, it has not cleared (via gravity) its own orbit of debris. Instead, they decided to classify it as a "dwarf planet".

See the details below.

RESOLUTION 5A
The IAU therefore resolves that "planets" and other bodies in our Solar System, except satellites, be defined into three distinct categories in the following way:

(1) A "planet" [footnote 1] 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 neighbourhood 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 [footnote 2] , (c) has not cleared the neighbourhood around its orbit, and (d) is not a satellite.

(3) All other objects [footnote 3] except satellites orbiting the Sun shall be referred to collectively as "Small Solar-System Bodies".


Footnote 1: The eight "planets" are: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune.

Footnote 2: An IAU process will be established to assign borderline objects into either dwarf planet and other categories.

Footnote 3: These currently include most of the Solar System asteroids, most Trans-Neptunian Objects (TNOs), comets, and other small bodies.

RESOLUTION 6A
The IAU further resolves:

Pluto is a "dwarf planet" by the above definition and is recognized as the prototype of a new category of trans-Neptunian objects.

Answer 5

pluto is still a planet, and it is somewhat questionable as to whether or not it is a planet because of its size and the fact that its orbit crosses over the orbit of nuptune, and so actually at certain times pluto is not the farthest planet from the sun, this was the case for a long time up until about 5 years ago, and it wont happen again until after im dead

i think the guy above me is wrong, and his moon argument wrong, moons dont follow the laws of planetary motion, but pluto I believe does, of course I'm not an astronomer or anything

o and the guy below me, i think hes wrong too lol

Answer 6

Pluto isnt a planet anymore cause of the size and other stuff about it not good enuf for it to be called a planet.

Answer 7

no, because the scientists say so. they said that it had the same characteristics or traits or whatever as like, millions or billions or sometin of other stars, so if pluto waas a planet that meant that all the other ones had to be a planet, so they had to make pluto a not-planet(??) lol. sorry, i love pluto too!!

Answer 8

nope pluto is no longer a planet





Pluto loses status as a planet

Pluto was discovered in 1930 by US astronomer Clyde Tombaugh


More details

Astronomers have voted to strip Pluto of its status as a planet.
About 2,500 scientists meeting in Prague have adopted historic new guidelines that see the small, distant world demoted to a secondary category.

The researchers said Pluto failed to dominate its orbit around the Sun in the same way as the other planets.

The International Astronomical Union's (IAU) decision means textbooks will now have to describe a Solar System with just eight major planetary bodies.

HAVE YOUR SAY
I don't see the need to redefine the solar system

Siraj Ahsan, Dubai


Send us your comments
See the new Solar System
Pluto, which was discovered in 1930 by the American Clyde Tombaugh, will be referred to as a "dwarf planet".

There is a recognition that the demotion is likely to upset the public, who have become accustomed to a particular view of the Solar System.

Teary-eyed

"I have a slight tear in my eye today, yes; but at the end of the day we have to describe the Solar System as it really is, not as we would like it to be," said Professor Iwan Williams, chair of the IAU panel that has been working over recent months to define the term "planet".


The meeting had seen some fierce arguments before final voting
The need for a strict definition was deemed necessary after new telescope technologies began to reveal far-off objects that rivalled Pluto in size.

Without a new nomenclature, these discoveries raised the prospect that textbooks could soon be talking about 50 or more planets in the Solar System.

Amid dramatic scenes in the Czech capital which saw astronomers waving yellow ballot papers in the air, the IAU voted to block this possibility - and in the process took the historic decision to relegate Pluto.

The scientists agreed that for a celestial body to qualify as a planet:

it must be in orbit around the Sun
it must be large enough that it takes on a nearly round shape
it has cleared its orbit 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.

Icy reaches

Pluto's status has been contested for many years. It is further away and considerably smaller than the eight other "traditional" planets in our Solar System. At just 2,360km (1,467 miles) across, Pluto is smaller even than some moons in the Solar System.

PLUTO - A 'DEMOTED PLANET'
Named after underworld god
Average of 5.9bn km to Sun
Orbits Sun every 248 years
Diameter of 2,360km
Has at least three moons
Rotates every 6.8 days
Gravity about 6% of Earth's
Surface temperature -233C
Nasa probe visits in 2015
Its orbit around the Sun is also highly tilted compared with the plane of the big planets.

In addition, since the early 1990s, astronomers have found several objects of comparable size to Pluto in an outer region of the Solar System called the Kuiper Belt.

Some astronomers have long argued that Pluto would be better categorised alongside this population of small, icy worlds.

The critical blow for Pluto came with the discovery three years ago of an object currently designated 2003 UB313. After being measured with the Hubble Space Telescope, it was shown to be some 3,000km (1,864 miles) in diameter: it is bigger than Pluto.

2003 UB313 will now join Pluto in the dwarf category, along with the biggest asteroid in the Solar System, Ceres.

Named after the god of the underworld in Roman mythology, Pluto orbits the Sun at an average distance of 5.9 billion kilometres (3.7 billion miles) taking 247.9 Earth years to complete a single circuit of the Sun.

An unmanned US spacecraft, New Horizons, is due to fly by Pluto and the Kuiper Belt in 2015

Answer 9

Why is pluto maybe a planet, because it has an atmosphere. Why is pluto maybe not a planet, because maybe it was a moon which escaped from Neptune's gravitational pull .

Answer 10

there is definate proof that pluto is not a planet it took a satilitte close to 30 years to reach plutos area and send a picture back and theres nothing
pluto was an imagination planet which means we never saw it but a gravitational pull made us believe there was somthing there turns out even NASA is wrong