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What Is a Planet Lithograph
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What Is a Planet Lithograph

2 pages
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Best when printed on 8 1/2 x 11 paper.

Most recent update: 10 Sep 2013

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What Is a Planet - 804 KB PDF File

Over historical time, objects categorized as planets have changed.

Note: This lithograph was revised in September 2013.

For the most recent planetary science developments, visit our Planets section.

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Advisory: Dr. James Green, Director of Planetary Science
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Last Updated: 10 Sep 2013