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Is Pluto a planet? The votes are in

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Smithsonian Insider  Search this
Type:
Blog posts
Smithsonian staff publications
Blog posts
Published Date:
Mon, 22 Sep 2014 15:12:31 +0000
Blog Post Category:
Research News
Science & Nature
Space
astronomy
astrophysics
Center for Astrophysics | Harvard & Smithsonian
Smithsonian Astrophysical Observatory
Description:
What is a planet? For generations of kids the answer was easy. A big ball of rock or gas that orbited our Sun, and there […]
Topic:
Science  Search this
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Smithsonian Insider
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Smithsonian Insider
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