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IAU definition of planet - Wikipedia


The definition of planet set in Prague, Czech Republic in August 2006 by the International ... New York City's newly renovated Hayden Planetarium did not include Pluto in its exhibit of the plan...

Why Is Pluto No Longer a Planet? | Wonderopolis


The truth is, nothing about Pluto changed, but the definition of a planet did. Once these changes became official, Pluto no longer fit the definition of a planet.

Why Pluto is No Longer a Planet - Universe Today


Nov 27, 2009 ... It most certainly excludes Neptune, which does not clear its orbit of Pluto. .... Why not add a new subcategory of planets to fit objects like Pluto, ...

Why Is Pluto No Longer A Planet? We Explain : CULTURE : Tech ...


Apr 22, 2015 ... Here's why Pluto is no longer considered a planet. ... they overwhelmingly voted that Pluto fit the description of dwarf planet better than planet.

Why is Pluto no longer a planet? (Everyday Mysteries: Fun Science ...


Essentially Pluto meets all the criteria except one- it “has not cleared its ... that does not meet these criteria is now classed as a “dwarf planet,” and that includes  ...

Why Is Pluto No Longer A Planet - Planets For Kids


Pluto used to be known as the smallest planet in our solar system, and the ... to decide that “planet” actually needed to be defined, to see if Eris would fit into the  ...

Why is Pluto not a planet? – Greg Laden's Blog - ScienceBlogs


Jul 13, 2015 ... The simplest reason that Pluto is not a planet is that planet experts say ..... Pluto should not have a minor planet number because it does not fit ...

Why is Pluto no longer considered a planet? | HowStuffWorks


Aug 24, 2006 ... The planets in our solar system all orbit the sun in a relatively flat plane. ... Pluto is relatively round and orbits the sun, but it does not meet the ...

What Is Pluto? | NASA


A. Most planets orbit the sun in a near-circle. The sun is in the center of the circle. But Pluto does not orbit in a circle. The orbit of Pluto is shaped like an oval.

Pluto Not a Planet, Astronomers Rule - National Geographic News


Aug 24, 2006 ... Pluto is no longer a planet, according to a new official definition. ... Pluto has been demoted because it does not dominate its neighborhood.