The San Diego Union-Tribune will mark its 150th anniversary in 2018 by presenting a big entrance web page from the archives every day all year long.
In 2006, the International Astronomical Union declared that Pluto was not a full-fledged planet, demoting it to the standing of a “dwarf planet.” San Diego’s Palomar Observatory performed a job in pushing Pluto from the planetary pantheon.
Using the Palomar Observatory’s Oschin telescope, Caltech astronomers Michael Brown and Chadwick Trujillo found a frozen celestial physique nearly four billion miles from Earth in photos taken June four 2002. The discovery of that object, referred to as Quaoar, in 2002, in addition to subsequent discoveries of different ice balls even bigger than Pluto hiding within the Kuiper Belt, led to Pluto’s demotion.
Here are the primary few paragraphs of the story:
Pluto stripped of its A-list standing
Beloved Pluto’s demise will have an effect on photo voltaic system mobiles in all places
By Elizabeth Fitzsimons, Staff Writer
Pluto, so small and much away with its uncommon orbit, has all the time been the odd man out, by no means fairly becoming in with the eight different planets.
Yesterday, it was formally kicked out of the membership, demoted to the standing of “dwarf planet.” That does not imply the choice will not have a big effect.
Although they did not begin out to do it, astronomers utilizing the Palomar Observatory performed a job in giving Pluto the chilly shoulder.
It was at Palomar that the invention of UB 313 was introduced final 12 months.Nicknamed “Xena,” it’s bigger than Pluto, and pushed scientists to settle the controversy over Pluto’s standing.
If Pluto remained a planet, what would Xena and Ceres, the most important asteroid, be? Now, they’re dwarf planets, too.
“You have to decide at what level do you stop calling something a planet and start calling it something else,” mentioned Allen Shafter, astronomy division chair at San Diego State University. SDSU.
Though most individuals noticed it coming, there might be some adjusting. The mobiles, the fashions, the textbooks and glow-in-the-dark photo voltaic system ceiling stickers.
And what of the mnemonic gadget typically taught to schoolchildren to recollect the planets: My Very Excellent Mother Just Served Us Nine Pizzas? “You can’t just stop at `Nine.’ You could say nutmeg or noodles or whatever you like,” mentioned Scott Kardel, spokesman for the Palomar Observatory.
There was resistance to the demotion, in fact. People do not like change.And they like Pluto — it had some thriller, it was the little man,deserving of affection and sympathy. Pluto was the title of Mickey Mouse’s canine, in spite of everything.
View anniversary entrance pages on-line at sandiegouniontribune.com/150-years. For extra from the Union-Tribune digital archives, go to newslibrary.com/sites/sdub. Searching is free, with registration. A charge is required to view full tales.