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According to National Geographic, the primary reason Pluto was demoted from planet to dwarf planet status is its size relative to its satellite. All the other planets with moons ar...

Pluto does not meet all three criteria that now define a planet. A planet must orbit around the Sun, have sufficient mass to maintain a nearly round shape, and it must have cleared the neighborhood around its orbit.
Pluto has not cleared the neighboorhood around its orbit. It has been reclassified as a "dwarf planet". More >>



Pluto has five known moons: Charon (the largest, with a diameter just over half ... The IAU has not formalized a definition for binary dwarf planets, and Charon is ...... because the two cameras on ...

Why Pluto is No Longer a Planet - Universe Today


Jan 5, 2012 ... This article was originally written in 2008, but we created a cool video to go along with it yesterday Let's find out why Pluto is no longer ...

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 is Pluto no longer a planet? - BBC News - BBC.com


Jul 13, 2015 ... In 2006, Pluto was demoted from planet status. Why was it removed from the planet club?

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


The International Astronomical Union (IAU) downgraded the status of Pluto to that of a dwarf planet because it did not meet the three criteria the IAU uses to ...

What Is Pluto? | NASA


This group decided that Pluto was not really a planet because of its size and location in space. ..... Large debris could be satellites that are no longer working.

Why Is Pluto No Longer A Planet? We Explain : T-Lounge : Tech Times


Apr 22, 2015 ... Here's why Pluto is no longer considered a planet. (Photo : NASA/Johns Hopkins University Applied Physics Laboratory/Southwest Research ...

Pluto Not a Planet, Astronomers Rule - National Geographic


Aug 24, 2006 ... Pluto is no longer a planet, according to a new official definition. Instead the icy sphere will be considered one of more than 40 "dwarf planets."

Popular Q&A
Q: Why is pluto no longer a planet?
A: Pluto is no longer considered a planet because the standards of a planet have been changed, and now it is too small. It's only twice the size of its moon. Wow! Read More »
Source: www.kgbanswers.com
Q: Why is Pluto no longer a planet?
A: Astronomers weren't sure about Pluto's mass until the discovery of its largest Moon, Charon, in 1978. Pluto and its moons are now known to be just a large examp... Read More »
Source: www.chacha.com
Q: Why is Pluto no longer a planet?
A: It is still there, but astronomers have decided that it should not be called a planet because it is too small and in a weird orbit. They always knew it was smal... Read More »
Source: uk.answers.yahoo.com
Q: Why is pluto no longer a planet?
A: Because it's now New Improved Pluto-Lite ... The first of a new brand of mini-planets! Basically they found that Pluto was just too small to be a planet because... Read More »
Source: answers.yahoo.com
Q: Why is pluto no longer a planet?
A: Pluto is now considered a "plutoid" because it has a much different orbital path than the other planets and is MUCH smaller. because its Too small for scientist... Read More »
Source: www.chacha.com