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Science in Seconds - Pluto For Planethood

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Science in Seconds Know Everything RANTS – Pluto For Planethood Torah Kachur: September 13th, 2006, a day that will live in scientific infamy. On that day, the International Astronomy Union made the tearjerking, heart wrenching and... well, logical decision that our beloved planet Pluto had been downgraded to a dwarf planet. Pluto, or now more intimately known as 134340, was our ninth planet for all of my life. This wonderful space body is very small in astronomical scales, only about one fifth the mass of our own moon, and is composed mostly of rock and nitrogen ice. Sure, it's tiny, but that doesn't mean it doesn't belong. The spoiler to the planet party was Eris, discovered in 2005. Eris is 27% larger in mass than Pluto. This fact made the sticklers at the IAU rethink what it means to be a planet. They came up with three criteria. Planets must orbit the sun, have enough mass to be pulled into a sphere by their own gravity, and must have cleared a neighborhood around its orbit. Pluto doesn't fit that third criteria, an orbit of one's own, because it sits in the Kuiper belt. But Neptune, Mars, Jupiter, and even Earth don't fit the IAU rules, because they share orbits with asteroids. So, we're just basically picking on Pluto. But it was the third criteria, and that Pluto is only 0.07 times the mass of other objects in its orbit, that Pluto got, well, Plutoed, demoted, devalued, defrocked, left for dead. So, Pluto, you will live forever in my memory. Courtesy of Science in Seconds – All rights reserved Only for educational/non-profit purposes. (Translators are invited to put their name here)

Video Details

Duration: 1 minute and 57 seconds
Country: United States
Language: English
License: All rights reserved
Genre: None
Producer: Science in Seconds
Director: Science in Seconds
Views: 47
Posted by: tradottiinitaliano on Dec 19, 2011

Five years on, this still bugs me. Pluto didn't do anything wrong, it was just a magical little planet (or now dwarf planet) that charmed us with thoughts of being up to 7.4 million kilometers from the sun and it delights us with it's chaotic orbit. Plus, he's one damn cute dog.

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