The San Diego Union Tribune celebrates its 150th anniversary (19659003) in the year 2018 In 2006, the International Astronomical Union declared that Pluto was no longer a full-fledged planet and demoted it to the status of a "dwarf planet" Diego's Palomar Observatory played a role in displacing Pluto out of the planetary pantheon.
With the help of the Oshin At the Palomar Observatory telescopes, Caltech astronomers Michael Brown and Chadwick Trujillo discovered a frozen celestial body nearly 4 billion miles from Earth in June 4, 2002, discovering this object, called Quaoar, in 2002, as well as subsequent discoveries from other ice balls, even larger than Pluto in the Kuiper Belt, led to Pluto's demotion.
Here are the first sections of the story: [1
The decline of Beloved Pluto will affect the mobile stations of the solar system everywhere
By Elizabeth Fitzsimons, associate author
Pluto, so small and far away with its unusual Orbit has always been the strange man out there who never quite matched the other eight planets.
Yesterday it was officially thrown out of the club and demoted to a "dwarf planet". That does not mean that the decision will not have much effect.
Although they did not begin with it, astronomers using the Palomar Observatory played a role in giving Pluto the cold shoulder.
It was at Palomar that the discovery of UB 313 was announced last year. Called "Xena," it's bigger than Pluto and has urged scientists to settle the debate over Pluto's status.
If Pluto remained a planet, what would Xena and Ceres, the largest asteroid, be? Now they are also dwarf planets.
"You have to decide on what level you stop calling something a planet and start calling it something else," said Allen Shafter, Department of Astronomy at San Diego State University. SDSU.
Although most people saw it coming, there will be some adjustments. The mobiles, the models, the textbooks and the glowing dark ceiling stickers of the solar system.
And what reminder has often taught schoolchildren to remember the planets: My very distinguished mother has just served us nine pizzas? "You can not just stop at Nine, you could say nutmeg or pasta or whatever you like," said Scott Kardel, spokesman for the Palomar Observatory.
Of course there was resistance to the degradation. People do not like change. And they like Pluto – it had a secret, it was the little guy who deserves affection and sympathy. Pluto was finally the name of Mickey Mouse's dog.
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