Watch Xploration Outer Space Season 3 Episode 13 - What Makes a Planet?

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Xploration Outer Space Season 3 Episode 13

First Aired: December 3, 2016

Description: We€™ll explain why Pluto is no longer considered a planet, and why some scientists believe there is another planet in our solar system that hasn€™t been discovered yet. Host Emily Calandrelli finds out what makes a planet!