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Friday, August 25, 2006

Why Pluto tossed out ????

Pluto, a planet since 1930, got the boot because it didn't meet the new rules, which say a planet not only must orbit the sun and be large enough to assume a nearly round shape, but must "clear the neighborhood around its orbit."
That disqualifies Pluto, whose oblong orbit overlaps Neptune's, downsizing the solar system to eight planets from the traditional nine.

The complete history of Pluto is here

The decision by the IAU, the official arbiter of heavenly objects, restricts membership in the elite cosmic club to the eight classical planets:

Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus and Neptune.

But when such kinds of things happen we feel sad, personally I really became emotional after hearing this news since yesterday on all the news channels. And according to the news channels what I heard , that was a really tough decision for that committee members which was formed in 2003 to redefine the definition of planet coz the definition which we learnt in our childhood was allowing some other three planets in solar family which was making the total count of 12.

And then after three years of hard work the committee redefines the definition of planets as

“a planet must be not only spherical, but also must have cleared away all other objects in its vicinity. Its gravitational force must either have either pulled them in and absorbed them or flung them away. The icy, distant bodies Pluto, Charon, and Xena orbit among thousands of other similar bodies in a region of the solar system beyond Neptune called the Kuiper Belt. Furthermore, Pluto's orbit overlaps Neptune's. Ceres circles among a large number of astreroids. In each case, these dwarfs are too small to exert enough gravity to give them more space.”
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And according to this new definition the Pluto is tossed out of the Solar system.

Are you getting Emotional like me ????

C’mon the new idea of planets can be emotional because they're something we learn as children. Isn’t it ?


But somehow I tried to convince my self telling “this is really all about science, which is all about getting new facts , so this is all about move on to the new facts”.

This is not only for us , just think about the persion who discovered this planet !!!
It’s really embarrassing for him….

I must quote this….

"It's disappointing in a way, and confusing," said Patricia Tombaugh, the 93-year-old widow of Pluto discoverer Clyde Tombaugh.
"I don't know just how you handle it. It kind of sounds like I just lost my job," she said from Las Cruces, N.M. "But I understand science is not something that just sits there. It goes on. Clyde finally said before he died, 'It's there. Whatever it is. It is there.'"

But mission head Alan Stern said he was "embarrassed" by Pluto's undoing and predicted that Thursday's vote would not end the debate. Although 2,500 astronomers from 75 nations attended the conference, only about 300 showed up to vote.
"It's a sloppy definition. It's bad science," he said. "It ain't over."

Under the new rules, two of the three objects that came tantalizingly close to 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." The third object, Pluto's largest moon, Charon, isn't in line for any special designation.

Brown, whose Xena find rekindled calls for Pluto's demise because it showed it isn't nearly as unique as it once seemed, waxed philosophical.
"Eight is enough," he said, jokingly adding: "I may go down in history as the guy who killed Pluto."

Pluto and objects like it will be known as "dwarf planets," which raised some thorny questions about semantics: If a raincoat is still a coat, and a cell phone is still a phone, why isn't a dwarf planet still a planet????

Courtesy : NewsChannels and my Google.

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