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Why Isn't Pluto a Planet anymore?

Hi!

I still get a lot of questions about why Pluto isn't a planet anymore. The following is a good explanation of how it got changed to dwarf planet status. It is good to keep in mind that our understanding of the universe is constantly changing. As we learn more, how we think about space also changes. Who knows! Maybe you will make a similar discovery during your scientific career.


Last modified: Tuesday, 10 May 2011, 1:09 PM
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Exploring Space