Pluto No longer a planet.

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shakil
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Post by shakil » Thu Aug 24, 2006 6:16 pm

Pluto Is No Longer a Planet, Astronomers Say

By William J. Kole
Associated Press
Thursday, August 24, 2006; 9:46 AM

PRAGUE, Czech Republic (AP) -- Leading astronomers declared Thursday that Pluto is no longer a planet under historic new guidelines that downsize the solar system from nine planets to eight.

After a tumultuous week of clashing over the essence of the cosmos, the International Astronomical Union stripped Pluto of the planetary status it has held since its discovery in 1930. The new definition of what is -- and isn't -- a planet fills a centuries-old black hole for scientists who have labored since Copernicus without one.

Although astronomers applauded after the vote, Jocelyn Bell Burnell -- a specialist in neutron stars from Northern Ireland who oversaw the proceedings -- urged those who might be "quite disappointed" to look on the bright side.

"It could be argued that we are creating an umbrella called 'planet' under which the dwarf planets exist," she said, drawing laughter by waving a stuffed Pluto of Walt Disney fame beneath a real umbrella.

The decision by the prestigious international group spells out the basic tests that celestial objects will have to meet before they can be considered for admission to the elite cosmic club.

For now, membership will be restricted to the eight "classical" planets in the solar system: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus and Neptune.

Much-maligned Pluto doesn't make the grade under the new rules for a planet: "a celestial body that is in orbit around the sun, has sufficient mass for its self-gravity to overcome rigid body forces so that it assumes a ... nearly round shape, and has cleared the neighborhood around its orbit."

Pluto is automatically disqualified because its oblong orbit overlaps with Neptune's.

Instead, it will be reclassified in a new category of "dwarf planets," similar to what long have been termed "minor planets." The definition also lays out a third class of lesser objects that orbit the sun -- "small solar system bodies," a term that will apply to numerous asteroids, comets and other natural satellites.

It was unclear how Pluto's demotion might affect the mission of NASA's New Horizons spacecraft, which earlier this year began a 961/27-year journey to the oddball object to unearth more of its secrets.

The decision at a conference of 2,500 astronomers from 75 countries was a dramatic shift from just a week ago, when the group's leaders floated a proposal that would have reaffirmed Pluto's planetary status and made planets of its largest moon and two other objects.

That plan proved highly unpopular, splitting astronomers into factions and triggering days of sometimes combative debate that led to Pluto's undoing.

Now, two of the objects that at one point were cruising toward possible full-fledged planethood will join Pluto as dwarfs: the asteroid Ceres, which was a planet in the 1800s before it got demoted, and 2003 UB313, an icy object slightly larger than Pluto whose discoverer, Michael Brown of the California Institute of Technology, has nicknamed Xena.

Charon, the largest of Pluto's three moons, is no longer under consideration for any special designation.

:blink:

<span style='color:red'>Should Pluto be a planet?</span>


<span style='color:red'>Heres a picture of Pluto:</span>

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<span style='color:red'>Sorry wrong one :P </span>
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Chox
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Post by Chox » Sat Sep 09, 2006 1:59 am

yo pluto no more, thats dumb i been learning about pluto in skewl n that back in da day now i hear pluto is not a planet lol wtf

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shakil
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Post by shakil » Sat Sep 09, 2006 11:24 am

The main reason is that Pluto has a moon, and the moon orbits around Pluto, like Earth BUTTTTTT Pluto orbits around the moon ASWELL so they orbiting around each other! And theres someother reasons but I'm **** at science so I forgot them :blink:
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hacker
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Post by hacker » Sat Sep 09, 2006 5:16 pm

shakil_786 wrote: The main reason is that Pluto has a moon, and the moon orbits around Pluto, like Earth BUTTTTTT Pluto orbits around the moon ASWELL so they orbiting around each other! And theres someother reasons but I'm **** at science so I forgot them :blink:
<span style='color:yellow'>Yeah, I see what you mean...

Lol... But...

To fully explain what you're trying to say you need an essay about 10 pages long... lol :D</span>
Keepin it real...

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Chox
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Post by Chox » Sun Sep 10, 2006 2:09 am

yep, i knw what u mean der

jus do the cobra method, copy n paste frm google (ha)

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noorie69
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Post by noorie69 » Thu Jul 12, 2007 3:07 pm

wooooooooooooow this topic was posted in aug last year, i found out about it a few months ago :roll: :oops: :)
**bak 2 rule the world .. !!**

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cuzzy
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Post by cuzzy » Mon Jul 16, 2007 7:47 pm

lol noorie :shock:
it kinda goes to show that not everything you learn in Science is correct a perfect example is Pluto - tis was classified as a planet for many years now tis being said 'Pluto is no longer a planet' - stupid scientists :evil:

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HUMZA
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Post by HUMZA » Sat Jul 21, 2007 4:25 pm

shakila lol man pluto is a ball of gass

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* Adnan *
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Post by * Adnan * » Sat Jul 21, 2007 9:26 pm

No longer planet learnth that last year :)
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Platinum_Pwincess
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Post by Platinum_Pwincess » Wed Jul 25, 2007 9:48 pm

I found out about pluto no longer being a planet on Newsround. :shock:

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]| x EeYa x |[
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..

Post by ]| x EeYa x |[ » Sat Sep 15, 2007 8:56 pm

The planet b4 pluto is neptune right? Watch pretty soon scientists are gonna say that neptune aint a planet too.. Guranteed...
It all makes sense...
Theres supposed to be 7 skys n 7 zameens(grounds?).. And i fink that the 7 planets might represent the 7 zameens. I might be wrong but who knows.. 7 worlds... 7 planets... It all adds up sumhow :$

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-MissS-
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Post by -MissS- » Sat Sep 15, 2007 10:07 pm

Doubt it. Pluto is no longer a planet by definition, cos it's made out of ice. It's just a giant ICE CRYSTAL! Neptune isn't :p
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